64 lines
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64 lines
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items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><circle cx="8" cy="8" r="6" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><polyline points="8,3 8,8 11,11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Uptime Monitoring</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Measure the availability of your digital footprint</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/heartbeat-monitoring/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 12L10.5 9.5L12 11L13.5 8.5L14.5 10.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 12L5.5 9.5L4 11L2.5 8.5L1.5 10.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 4L9.5 5.5L10.5 4.5L11.5 6.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Heartbeat Monitoring</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Catch cron jobs and backups that fail silently</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/synthetic-monitoring/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M2 8L6 4L10 8L14 4" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M2 12L6 8L10 12L14 8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Synthetic Monitoring</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Simulate real user interactions across your stack</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/testing/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><rect x="2" y="2" width="12" height="12" rx="2.5" stroke="currentColor" stroke-linejoin="round"></rect><path d="M5 8.2 7 10.2 11 5.8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Testing</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Catch issues before production with an AI-powered test reporter</span></a></div></div><div><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Communicate</p><div class="grid grid-cols-2 gap-x-5 gap-y-0.5 mt-1.5 w-[460px]"><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/status-pages/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><rect x="2" y="3" width="12" height="10" rx="1" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></rect><path d="M2 6H14" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><circle cx="4" cy="4.5" r="0.5" fill="currentColor"></circle><circle cx="6" cy="4.5" r="0.5" fill="currentColor"></circle><circle cx="8" cy="4.5" r="0.5" fill="currentColor"></circle></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Status Pages</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Communicate app availability to your customers</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/alerting/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 1L15 14H1L8 1Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 6V9" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><circle cx="8" cy="12" r="0.5" fill="currentColor"></circle></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Alerts</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Contextual alerting to notify the team right away</span></a></div></div><div><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Resolve</p><div class="grid grid-cols-2 gap-x-5 gap-y-0.5 mt-1.5 w-[460px]"><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/ai-analysis/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 2L14 5V11L8 14L2 11V5L8 2Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L14 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L2 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8V14" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">AI Root Cause Analysis</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Automated root cause analysis powered by AI agents</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/product/traces/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M2 8L6 4L10 8L14 4" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M2 12L6 8L10 12L14 8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><circle cx="6" cy="4" r="1" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><circle cx="10" cy="8" r="1" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><circle cx="10" cy="12" r="1" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Traces</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Powerful OTel tracing for deeper insights</span></a></div></div></div><div class="mt-5 pt-4 border-t border-gray-200"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Getting Started</p><div class="flex flex-wrap items-center gap-1 mt-1.5 -ml-2.5"><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="https://app.checklyhq.com/signup/">Start for free</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/demo-request/">Book a demo</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/contact-sales/">Talk to Sales</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/product/monitoring-as-code/">Monitoring as Code</a></div></div></div></div></div></div><div class="relative flex items-center h-[var(--nav-height)]"><button class="nav-item" aria-expanded="false" aria-controls="nav-dropdown-solutions" aria-haspopup="true">Solutions<span class="dropdown-icon" aria-hidden="true"></span></button><div id="nav-dropdown-solutions" role="region" aria-label="Solutions" style="left:0" inert="" class="absolute top-full pt-2 z-30 origin-top transition duration-200 ease-out motion-reduce:transition-none motion-reduce:transform-none -translate-y-1 scale-95 opacity-0 pointer-events-none"><div class="nav-panel w-max max-w-[calc(100vw-2rem)] max-h-[calc(100vh-var(--nav-height)-1.5rem)] overflow-y-auto rounded-2xl border border-gray-200 bg-white text-checkly-dark-blue"><div class="p-6"><div class="flex gap-6"><div class="w-[248px]"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Personas</p><div class="flex flex-col gap-y-0.5 mt-1.5"><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/developers/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><polyline points="5.5,5 2.5,8 5.5,11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><polyline points="10.5,5 13.5,8 10.5,11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><path d="M9 3.5L7 12.5" stroke="currentColor" stroke-linecap="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Developers</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Checks in TypeScript, in your repo, deployed with your app</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/sre/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 2.5L14 5.5L8 8.5L2 5.5L8 2.5Z" stroke="currentColor" stroke-linejoin="round"></path><polyline points="2,8.5 8,11.5 14,8.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><polyline points="2,11.5 8,14.5 14,11.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">SRE & Platform</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">The synthetic layer for your observability stack</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/qa/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><polyline points="2,5 3.2,6.2 5.4,4" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><polyline points="2,11 3.2,12.2 5.4,10" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><path d="M7.5 5H14" stroke="currentColor" stroke-linecap="round"></path><path d="M7.5 11H14" stroke="currentColor" stroke-linecap="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">QA Engineers</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Run your Playwright suite as production monitors</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/engineering-managers/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><circle cx="6" cy="5.5" r="2.25" stroke="currentColor"></circle><path d="M2 13.5c0-2.2 1.8-3.6 4-3.6s4 1.4 4 3.6" stroke="currentColor" stroke-linecap="round"></path><path d="M10.5 3.6a2.25 2.25 0 0 1 0 3.8" stroke="currentColor" stroke-linecap="round"></path><path d="M11.5 10.3c1.5.4 2.5 1.6 2.5 3.2" stroke="currentColor" stroke-linecap="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Engineering Managers</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Give every team ownership of its own monitors</span></a></div></div><div class="w-[248px]"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Use Cases</p><div class="flex flex-col gap-y-0.5 mt-1.5"><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/use-cases/critical-user-flows/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><circle cx="3.25" cy="8" r="1.75" stroke="currentColor"></circle><circle cx="12.75" cy="4.25" r="1.75" stroke="currentColor"></circle><circle cx="12.75" cy="11.75" r="1.75" stroke="currentColor"></circle><path d="M4.9 7.4 11.1 4.9" stroke="currentColor" stroke-linecap="round"></path><path d="M4.9 8.6 11.1 11.1" stroke="currentColor" stroke-linecap="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Critical user flows</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Watch login, checkout, and signup from real browsers</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/use-cases/api-monitoring/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M6.8 3.5C5.8 3.5 5.5 4.2 5.5 5.5C5.5 6.8 5.3 7.5 4.3 8C5.3 8.5 5.5 9.2 5.5 10.5C5.5 11.8 5.8 12.5 6.8 12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M9.2 3.5C10.2 3.5 10.5 4.2 10.5 5.5C10.5 6.8 10.7 7.5 11.7 8C10.7 8.5 10.5 9.2 10.5 10.5C10.5 11.8 10.2 12.5 9.2 12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">API & backend monitoring</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Validate endpoints, chains, and auth on a schedule</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/use-cases/tests-to-monitors/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><rect x="2" y="2" width="12" height="12" rx="2.5" stroke="currentColor" stroke-linejoin="round"></rect><path d="M5 8.2 7 10.2 11 5.8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Tests to production monitors</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Promote tagged specs from CI to scheduled checks</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/use-cases/consolidation/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M2 3.5h2.5c2 0 2.5 4.5 4.5 4.5H14" stroke="currentColor" stroke-linecap="round"></path><path d="M2 12.5h2.5c2 0 2.5-4.5 4.5-4.5" stroke="currentColor" stroke-linecap="round"></path><polyline points="11.75,5.75 14,8 11.75,10.25" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Observability consolidation</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Replace the synthetic module bolted onto your APM</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/use-cases/ai-generated-code/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 2L14 5V11L8 14L2 11V5L8 2Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L14 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L2 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8V14" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Reliability for AI-generated code</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Verify what your agents ship before your users do</span></a></div></div><div class="w-[248px]"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Industries</p><div class="flex flex-col gap-y-0.5 mt-1.5"><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/industries/ecommerce/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><polyline points="1.75,2.5 3.4,2.5 5,9.5 12.25,9.5 13.75,4.5 4,4.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><circle cx="5.75" cy="12.75" r="1" stroke="currentColor"></circle><circle cx="11.5" cy="12.75" r="1" stroke="currentColor"></circle></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">E-commerce</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Protect checkout and revenue paths around the clock</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/industries/financial-services/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><polyline points="1.75,6 8,2.5 14.25,6" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></polyline><path d="M3.75 6.75v5" stroke="currentColor" stroke-linecap="round"></path><path d="M8 6.75v5" stroke="currentColor" stroke-linecap="round"></path><path d="M12.25 6.75v5" stroke="currentColor" stroke-linecap="round"></path><path d="M2 13.5h12" stroke="currentColor" stroke-linecap="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Financial services</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Prove uptime and latency against strict SLAs</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/solutions/industries/saas/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M4.6 12.5a2.85 2.85 0 0 1-.35-5.68 3.65 3.65 0 0 1 7.02-.6A2.95 2.95 0 0 1 11.6 12.5H4.6Z" stroke="currentColor" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">SaaS & B2B software</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Keep every tenant's core workflows verified</span></a></div></div></div><div class="mt-5 pt-4 border-t border-gray-200"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Moving from another tool?</p><div class="flex flex-wrap items-center gap-1 mt-1.5 -ml-2.5"><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/datadog-alternative/">vs. Datadog</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/new-relic-alternative/">vs. New Relic</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/alternative-pingdom/">vs. Pingdom</a><a class="px-2.5 py-1 text-[13px] font-medium whitespace-nowrap rounded-md transition-colors duration-150 hover:bg-gray-100 hover:text-checkly-blue" href="/switch/catchpoint/">vs. Catchpoint</a></div></div></div></div></div></div><div class="relative flex items-center h-[var(--nav-height)]"><button class="nav-item" aria-expanded="false" aria-controls="nav-dropdown-developers" aria-haspopup="true">Developers<span class="dropdown-icon" aria-hidden="true"></span></button><div id="nav-dropdown-developers" role="region" aria-label="Developers" style="left:0" inert="" class="absolute top-full pt-2 z-30 origin-top transition duration-200 ease-out motion-reduce:transition-none motion-reduce:transform-none -translate-y-1 scale-95 opacity-0 pointer-events-none"><div class="nav-panel w-max max-w-[calc(100vw-2rem)] max-h-[calc(100vh-var(--nav-height)-1.5rem)] overflow-y-auto rounded-2xl border border-gray-200 bg-white text-checkly-dark-blue"><div class="p-6"><p class="text-[11px] 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class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Documentation</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Learn key concepts and features</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="https://www.checklyhq.com/docs/api-reference/overview"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M6.8 3.5C5.8 3.5 5.5 4.2 5.5 5.5C5.5 6.8 5.3 7.5 4.3 8C5.3 8.5 5.5 9.2 5.5 10.5C5.5 11.8 5.8 12.5 6.8 12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M9.2 3.5C10.2 3.5 10.5 4.2 10.5 5.5C10.5 6.8 10.7 7.5 11.7 8C10.7 8.5 10.5 9.2 10.5 10.5C10.5 11.8 10.2 12.5 9.2 12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">API Docs</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Build on the Checkly REST API</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/cli/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><rect x="2" y="3" width="12" height="10" rx="1.5" stroke="currentColor" stroke-linejoin="round"></rect><path d="M5 6.5 7 8 5 9.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8.5 9.5H11" stroke="currentColor" 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2" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Quickstart</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Set up your first check fast</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/docs/guides/overview/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><circle cx="4" cy="4" r="1.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><circle cx="8" cy="8" r="1.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><circle cx="12" cy="12" r="1.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></circle><path d="M5.5 4L6.5 8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M9.5 8L10.5 12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">Guides</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">In-depth Playwright & OTel guides</span></a><a class="flex flex-col gap-0.5 px-2.5 py-[3px] -mx-2.5 rounded-md transition-colors duration-150 group hover:bg-gray-100" href="/docs/ai/mcp-server/"><span class="flex gap-2.5 items-center"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><rect x="2.5" y="3" width="11" height="4" rx="1" stroke="currentColor"></rect><rect x="2.5" y="9" width="11" height="4" rx="1" stroke="currentColor"></rect><circle cx="5" cy="5" r="0.6" fill="currentColor"></circle><circle cx="5" cy="11" r="0.6" fill="currentColor"></circle></svg></span><span class="flex gap-2 items-center text-[13px] font-medium transition-colors duration-150 group-hover:text-checkly-blue">MCP Server</span></span><span class="block pl-[28px] text-xs text-gray-500 leading-snug text-pretty">Connect Checkly to your AI tools</span></a></div></div><div class="mt-5 pt-4 border-t border-gray-200"><p class="text-[11px] font-semibold tracking-wider uppercase text-gray-500">Reference</p><div class="flex flex-wrap items-center gap-1 mt-1.5 -ml-2.5"><a class="flex gap-2 items-center px-2.5 py-1 rounded-md text-[13px] font-medium whitespace-nowrap transition-colors duration-150 group hover:bg-gray-100 hover:text-checkly-blue" href="/docs/ai/skills/"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" class="w-[18px] h-[18px]"><path d="M8 2L14 5V11L8 14L2 11V5L8 2Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L14 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8L2 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M8 8V14" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path></svg></span>Agent Skills</a><a class="flex gap-2 items-center px-2.5 py-1 rounded-md text-[13px] font-medium whitespace-nowrap transition-colors duration-150 group hover:bg-gray-100 hover:text-checkly-blue" href="/product/terraform-provider/"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><img alt="" loading="lazy" width="20" height="20" decoding="async" data-nimg="1" style="color:transparent;width:20px;height:20px" src="/nav-icons/terraform.svg"/></span>Terraform</a><a class="flex gap-2 items-center px-2.5 py-1 rounded-md text-[13px] font-medium whitespace-nowrap transition-colors duration-150 group hover:bg-gray-100 hover:text-checkly-blue" href="/product/pulumi-provider/"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><img alt="" loading="lazy" width="20" height="20" decoding="async" data-nimg="1" style="color:transparent;width:20px;height:20px" src="/nav-icons/pulumi.svg"/></span>Pulumi</a><a class="flex gap-2 items-center px-2.5 py-1 rounded-md text-[13px] font-medium whitespace-nowrap transition-colors duration-150 group hover:bg-gray-100 hover:text-checkly-blue" href="/docs/integrations/alerts/discord/"><span class="text-gray-500 transition-colors duration-150 shrink-0 group-hover:text-checkly-blue"><svg class="w-[18px] h-[18px]" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="4" cy="4" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="10" cy="4" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="16" cy="4" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="4" cy="10" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="10" cy="10" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="16" cy="10" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="4" cy="16" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="10" cy="16" r="1.5" fill="#222" fill-opacity="0.8"></circle><circle cx="16" cy="16" r="1.5" fill="#222" fill-opacity="0.8"></circle></svg></span>All Integrations</a><a class="flex gap-2 items-center px-2.5 py-1 rounded-md text-[13px] font-medium whitespace-nowrap transition-colors duration-150 group hover:bg-gray-100 hover:text-checkly-blue" href="/changelog/"><span class="text-gray-500 transition-colors duration-150 shrink-0 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href="/customers/">Customers</a><a class="text-checkly-deep-blue flex items-center p-3 py-4 -mx-3 transition-colors duration-200 ease-in-out hover:bg-blue-300/10 font-medium rounded-lg" target="" href="/pricing/">Pricing</a><div class="flex flex-col mt-4 space-y-2"><a href="https://app.checklyhq.com/signup" target="_blank" rel="noopener noreferrer" class="button button-sm sm:hidden">Start for free</a><a href="https://app.checklyhq.com/" target="_blank" rel="noopener noreferrer" class="button button-secondary button-sm sm:hidden">Login</a></div></div></nav></div></nav></header><main class="jsx-1363477968"><header class="pt-24 pb-28 section section-blog-hero theme-dark"><div class="container"><div class="max-w-[700px] space-y-6"><div class="flex items-center gap-x-2 text-sm font-mono tracking-wide text-gray-400"><a class="uppercase transition-colors duration-150 hover:text-white" href="/blog/">Blog</a><span class="flex items-center gap-x-2"><span aria-hidden="true" class="text-gray-600">/</span><a class="uppercase transition-colors duration-150 hover:text-white" href="/blog/tag/devops/">devops </a></span></div><h1 class="text-3xl title md:text-5xl">How We Migrated Checkly From Heroku to AWS</h1><div class="flex flex-wrap items-center gap-3"><a class="inline-flex items-center gap-x-2.5 text-gray-300 transition-colors duration-150 hover:text-white" href="/blog/author/daniel-paulus/"><img alt="" loading="lazy" width="512" height="512" decoding="async" data-nimg="1" class="object-cover w-9 h-9 rounded-full" style="color:transparent" sizes="36px" srcSet="https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=16 16w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=32 32w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=48 48w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=64 64w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=96 96w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=128 128w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=256 256w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=384 384w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=640 640w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=750 750w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=828 828w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1080 1080w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1200 1200w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1920 1920w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=2048 2048w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=3840 3840w" src="https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=3840"/><span class="text-sm font-medium">Daniel Paulus</span></a><a class="inline-flex items-center gap-x-2.5 text-gray-300 transition-colors duration-150 hover:text-white" href="/blog/author/umut/"><img alt="" loading="lazy" width="800" height="800" decoding="async" data-nimg="1" class="object-cover w-9 h-9 rounded-full" style="color:transparent" sizes="36px" srcSet="https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=16 16w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=32 32w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=48 48w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=64 64w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=96 96w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=128 128w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=256 256w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=384 384w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=640 640w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=750 750w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=828 828w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=1080 1080w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=1200 1200w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=1920 1920w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=2048 2048w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=3840 3840w" src="https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=3840"/><span class="text-sm font-medium">Umut Uzgur</span></a></div><div class="flex items-baseline gap-2 text-sm text-gray-400"><time dateTime="2025-01-16">January 16, 2025</time><span>· Updated<!-- --> <time dateTime="2025-03-11T12:42:55+0000">March 11, 2025</time></span></div></div></div></header><div style="background:linear-gradient(to bottom, #041734, #041734 35%, transparent 35%)"><div class="container"><img alt="" loading="lazy" width="1600" height="900" decoding="async" data-nimg="1" class="max-h-[605px] w-full max-w-5xl rounded-2xl border border-blue-300/20 object-cover shadow-xl shadow-checkly-deep-blue/10 opacity-0 animate-[fadeSlideIn_400ms_cubic-bezier(0.23,1,0.32,1)_forwards]" style="color:transparent" sizes="(max-width 1279px) 100vw, 1024px" srcSet="https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=640 640w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=750 750w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=828 828w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=1080 1080w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=1200 1200w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=1920 1920w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=2048 2048w, https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=3840 3840w" src="https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format%2Ccompress&fit=max&w=3840"/></div></div><div class="container flex items-start py-16 gap-x-28 max-lg:flex-col"><div class="max-w-[75ch] w-full"><article class="rich-text lg:text-lg"><p>Several years ago—in 2016, to be exact—we decided to host the Checkly platform on Heroku, since it was the hosted cloud offering (at the time) that best aligned with our needs. In particular, we felt that Heroku offered the best PostgreSQL cloud offering available at the time.</p><p>But just as individuals grow and change over their lifetimes, such is the case with Checkly: We reached the point around 2022 that we needed to consider another hosting solution, and decided to move from Heroku to AWS as our hosting provider.</p><p>We thought it would be interesting to share some of our thoughts and learnings from this process, so we decided to write a blog post about our experiences.</p><h2 id="hosting-on-heroku"><a href="#hosting-on-heroku"><strong>Hosting on Heroku</strong></a></h2><p>As mentioned previously, we had been hosting Checkly on Heroku since 2016. We started with a 300GB data instance with four cores, and had a high availability standby setup if our instance went down. In terms of pricing plans we standard with their standard “Standard 0” pricing plan, and eventually expanded to their “Premium 4” plan. (For more details on pricing, see the <a target="_blank" href="https://elements.heroku.com/addons/heroku-postgresql" rel="noreferrer">Heroku pricing page</a>.)</p><p>While we were largely happy with our experience with Heroku, there were some Heroku-specific issues we encountered that necessitated the need to switch to another hosting platform.</p><p>In general, one of the biggest reasons behind the switch was that Heroku started to become a burden for our tech stack . More specifically, Heroku’s platform made it difficult for us to upgrade to the latest version of PostgreSQL. We were running PostgreSQL v10—and wanted to upgrade to PostgreSQL 13—and Heroku told us that they were going to discontinue support for PostgreSQL 10 by the end November 2022. Given that PostgreSQL is a vital component of our tech stack, that obviously wasn’t going to work for us!</p><p>In addition, Postgres would sometimes go down briefly and then restart. Heroku relied on forced maintenance windows, which made it difficult for us to get support when we needed it. More specifically, here are some of the challenges we faced with our Heroku environment:</p><ul><li>Heroku PSQL had a smaller set of supported PSQL extensions</li><li>There was no easy way to upgrade to a newer version of PSQL</li><li>Heroku PSQL plans had fixed size disk space offerings and it required a complicated migration to move to a bigger plan</li><li>Many essential tasks required an experienced PSQL engineer to tackle them</li></ul><h2 id="growing-pains-moving-to-aws"><a href="#growing-pains-moving-to-aws"><strong>Growing Pains: Moving to AWS</strong></a></h2><p>For all the reasons outlined above, we decided to move from Heroku to AWS. Moving to AWS promised to solve some of our key pain points: The ability to seamlessly upgrade to newer versions of PostgreSQL as needed and to have more flexibility with regards to maintenance windows, allowing us to set our own maintenance schedule based on our specific needs. After doing some research, we also realized that moving to AWS would relieve the requirement of having to have frequent involvement of senior engineers, as a lot of the require work could be accomplished by more junior engineers.</p><p>As we started to put together our plans for the transition, we sketched out a four week timeline for the project. The entire process ended up taking us about five weeks to complete, but our planning process was extensive. Here’s an outline of the steps we mapped out:</p><ol><li>Capacity planning and RDS offering choice</li><li>Choose the data replication method</li><li>Dry run migration of production</li><li>Collect data, improve, document and go back to 4 until thing are within expectation</li><li>Migrate dev and staging environment</li><li>Migrate production environment</li></ol><h2 id="from-heroku-to-aws-moving-the-data"><a href="#from-heroku-to-aws-moving-the-data"><strong>From Heroku to AWS: Moving the Data</strong></a></h2><p>Our first—and largest—technical challenge was getting our data out of Heroku and into AWS. Handling large-scale data migration is always scary! Even with backups, there’s always a concern about moving data from one location to another. We also were faced with the fact that migrating data from Heroku to AWS was a new domain that we just stepped into, and was a task that none of us had completed before.</p><p>Heroku had some default data exporting options, but after reviewing them we decided that all of the standard options weren’t viable for our specific use case, mainly because options would cause unacceptable amounts of downtime, and we also had 300GB of data to migrate! We ended up doing some research on non-standard export options from Heroku, and found an excellent article on Stackoverflow that outlined how you could work with Heroku to get additional, non-standard data export options that would make our task easier.</p><p>In our specific case, we had some issues with converting data types from our PostgreSQL instance to the <a target="_blank" href="https://aws.amazon.com/rds/" rel="noreferrer">Amazon Relational Database Service</a> (RDS). Heroku support suggested that we create a middleground EC2 instance running a PostgreSQL demon, then move the data from there to RDS.</p><p>We then explored three different approaches for getting our data from Heroku to RDS.</p><ol><li>The first approach we investigated was the <a target="_blank" href="https://aws.amazon.com/dms/" rel="noreferrer">AWS data migration service</a>. We tried this approach, but the process wasn’t seamless, and there were some errors we couldn’t overcome.</li><li>Our second method was to use an extension from PostgreSQL called <a target="_blank" href="https://github.com/2ndQuadrant/pglogical" rel="noreferrer">pglogical</a>. We encountered some admin complexity here, and also had some issues with schema changes, so we decided to try a third option, which was…</li><li>…a new type of replication called <a target="_blank" href="https://www.postgresql.org/docs/current/logical-replication.html" rel="noreferrer">logical replication</a>, while we were using a previous replication approach called <a target="_blank" href="https://www.postgresql.org/docs/current/runtime-config-wal.html" rel="noreferrer">Write Ahead Logging (WAL) replication</a>. We discovered that RDS does not support WAL replication, and native PostgreSQL replication doesn’t replicate database schema or table sequence changes.</li></ol><h2 id="discussions-about-downtime"><a href="#discussions-about-downtime"><strong>Discussions about downtime</strong></a></h2><p>We knew that downtime was inevitable, so we focused on how to minimize the downtime as much as possible. We looked at approaching our service downtime in two different ways: One with less downtime and more risk, and the other with more downtime and less risk.</p><p>We weighed and debated both options, and then—after lots of debating and deliberation—opted for the approach with greater downtime but enhanced safety. We didn’t want any surprises with the migration, so we allocated a 30 minute period of downtime, although we only ended up using about 10 minutes of the window.</p><p>Our planning and deliberation around the amount of downtime was extensive. If we were any other type of company—other than someone that provides 24/7 monitoring services like we do—you would plan the migration over the weekend. But as a company focused on monitoring services for uptime and reliability, do we really want to take the service offline on the weekend?</p><p>Here’s the rationale: You do the migration on Saturday, and somebody doesn't get an essential alert over the weekend. So if the platform is down for 40 minutes on a weekend, and nobody's in the office to realize that, correct? There were some interesting decisions we had to take because we're in the monitoring domain.</p><p>After that discussion, we decided the best course of action would be to treat it like an extended maintenance window, so the migration was scheduled for September 12th, 2022 at 7:00 AM UTC.</p><h3 id="announcing-the-migration"><a href="#announcing-the-migration"><strong>Announcing the Migration</strong></a></h3><p>We wanted to inform our customers of the upcoming extended maintenance window, so we sent an email that concisely explained what was happening.</p><p>Internally, we practiced for the migration: We tested the exercise three times on production to make sure that our data and timing was correct. We created and followed a playbook, spelling out every step we would take during the migration. We also pre-migrated some of the data thanks to some design decisions we took in our infrastructure early on, which helped us to accomplish the switchover in less than the scheduled time.</p><h2 id="migration-day-"><a href="#migration-day-"><strong>Migration Day!</strong></a></h2><p>Like any big migration, part of the work was to define the playbook for the team, ours look like this (omitting the migration scripts and AWS config files):</p><ol><li>Announce schema change freeze on Friday</li><li><code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">pg_dump</code> Heroku for schemas and push it to RDS on Friday</li><li>Disable preboot on on heroku services</li><li>Start EC2 PSQL with wal-e recovery</li><li>Wait until EC2 PSQL catches up with the latest WAL</li><li>Stop Heroku Schedulers</li><li>MAINTENANCE WINDOW STARTS</li><li>Scale down all daemons to 0</li><li>Move all connections to read-only <code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">ALERT DATABASE <dbname> SET default_transaction_read_only=on</code></li><li>Promote EC2 PSQL <code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">pg_ctl promote -D /database/</code></li><li>Give EC2 PSQL replication rights <code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">ALTER ROLE <username> WITH REPLICATION</code></li><li>Set <code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">statement_timeout</code> to 0 on EC2 and RDS</li><li>Start replication for the tables from EC2 to RDS</li><li>Wait until RDS catches up</li><li>Sync tables sequences with <code class="bg-blue-300/15 py-0.5 px-1.5 text-base rounded break-words">api/script/sync-sequences.js</code></li><li>Drop the replication subscriptions</li><li>Update database url in in the services</li><li>Scale up all services again</li><li>Enable preboot for checkly-api and checkly-cron-daemon again</li><li>Monitor the RDS database and validate new data coming in</li><li>Monitor the services and make sure the services are healthy</li><li>Restart Heroku Schedulers</li><li>MAINTENANCE WINDOW ENDS</li><li>After everything is over, kill EC2 and enjoy your day.</li></ol><p>While it’s lovely to envision an ‘infrastructure as code’ world where even migrations are just scripts and config that require no human checklists, in the real world migration from one cloud to another will always require a certain amount of human planning and human intervention. This is especially the case when moving up in cloud scale. Sadly no one at AWS is spending all their time writing ‘lift and shift’ guides for migrating complex architecture from heroku, though smaller cloud providers certainly have done that work to help new customers leave AWS.</p><h3 id="mission-accomplished"><a href="#mission-accomplished"><strong>Mission Accomplished</strong></a></h3><p>During the migration, everything went according to plan. We had no hiccups, no glitches, and everything went smoothly and we didn’t have to perform any last-minute minute operations or fire drills.</p><h2 id="what-we-learned-from-our-heroku-to-aws-migration"><a href="#what-we-learned-from-our-heroku-to-aws-migration"><strong>What we learned from our Heroku to AWS migration</strong></a></h2><p>After successfully completing our migration project, we have some learnings that are hopefully useful to others attempting the same project. That includes:</p><ul><li>Use partitioned tables so you can pre-migrate some of the data. If you have immutable data partitioned, you can migrate data before your maintenance window.</li><li>Make sure that your timeouts are set correctly</li><li>It’s better to overspend on the size of your RDS instance and downgrade later if you don’t need that much capacity. It’s much less painful to have more than you need that not enough!</li><li>Do fire drills - make sure you have an ordered list playbook</li><li>Test, test, and retest to make sure everything works</li><li>Downtime is inevitable! Just minimize it as much as you can.</li></ul><h2 id="conclusions"><a href="#conclusions">Conclusions</a></h2><p>Migrating from one cloud provider to another is a significant undertaking, and for CTOs and operations teams considering such a move, there are several key takeaways from our migration from Heroku to AWS:</p><ol><li><strong>Evaluate the “why”:</strong> Ensure the decision to migrate is backed by clear, well-understood needs, such as scalability, performance improvements, or cost efficiency. In our case, the inability to upgrade PostgreSQL easily and the lack of flexibility in Heroku's infrastructure were major factors. Come back to this “why” at least once in your process before your decision is final, and don’t let a drive to ‘get it done’ stop you from evaluating if the plan still provides the promised benefit.</li><li><strong>Plan Meticulously:</strong> A successful migration hinges on detailed planning. From understanding data replication methods to scheduling downtime and creating robust playbooks, every step needs careful consideration to avoid surprises.</li><li><strong>Communicate Clearly:</strong> Inform stakeholders—including customers—well in advance about potential disruptions. Transparency builds trust, and a well-prepared customer base is more understanding during maintenance windows.</li><li><strong>Test Extensively:</strong> Conduct multiple dry runs to iron out kinks and simulate the migration as closely as possible to identify potential pitfalls. This approach minimizes risks on the actual migration day.</li><li><strong>Balance Risk and Downtime:</strong> Consider the trade-offs between shorter downtime with higher risk and longer downtime with lower risk. For us, prioritizing safety with a slightly longer downtime was the right decision.</li><li><strong>Leverage Learnings:</strong> Post-migration, take stock of what went well and what could have been better. In our case, the value of partitioned tables, well-sized RDS instances, and clearly defined playbooks stood out.</li></ol><p>While migrations can seem daunting, with the right preparation and execution, they can unlock the scalability and flexibility needed to support your organization's growth. By sharing our journey, we hope to provide others with a roadmap to approach their own cloud migrations confidently. Remember, migrations are not just technical exercises—they’re strategic moves that require alignment across the technical and business sides of your organization.</p></article><div class="flex flex-wrap gap-4 lg:-ml-2 mt-14"><a class="group inline-flex items-center p-2 pr-6 text-gray-500 transition-colors duration-150 rounded-full gap-x-3 hover:bg-blue-300/20" href="/blog/author/daniel-paulus/"><img alt="" loading="lazy" width="512" height="512" decoding="async" data-nimg="1" class="object-cover rounded-full w-18 h-18 ring-2 ring-transparent transition-[box-shadow] duration-200 group-hover:ring-checkly-blue/30" style="color:transparent" sizes="48px" srcSet="https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=16 16w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=32 32w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=48 48w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=64 64w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=96 96w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=128 128w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=256 256w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=384 384w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=640 640w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=750 750w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=828 828w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1080 1080w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1200 1200w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=1920 1920w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=2048 2048w, https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=3840 3840w" src="https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format%2Ccompress&fit=max&w=3840"/><div><p>Daniel Paulus</p><p class="mb-1 text-xs">VP of Engineering</p><div class="flex gap-x-1"><a href="https://www.linkedin.com/in/daniel-paulus-checkly/" target="_blank" rel="noopener noreferrer" class="button w-8 h-8 p-0 rounded-full flex justify-center items-center transition-transform duration-100 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https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=1920 1920w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=2048 2048w, https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=3840 3840w" src="https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress%2Cformat&fit=max&w=3840"/><div><p>Umut Uzgur</p><p class="mb-1 text-xs">Senior Engineering Team Lead</p><div class="flex gap-x-1"></div></div></a></div></div><aside class="sticky top-24 hidden lg:block shrink-0 w-[280px]"><nav aria-label="Table of contents"><p class="text-xs font-medium uppercase tracking-wide text-gray-400 mb-4">In This Article</p><ul class="flex flex-col gap-2.5"><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#hosting-on-heroku">Hosting on Heroku</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#growing-pains-moving-to-aws">Growing Pains: Moving to AWS</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#from-heroku-to-aws-moving-the-data">From Heroku to AWS: Moving the Data</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#discussions-about-downtime">Discussions about downtime</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#migration-day-">Migration Day!</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#what-we-learned-from-our-heroku-to-aws-migration">What we learned from our Heroku to AWS migration</a></li><li class="border-l-2 pl-3 transition-colors duration-150 border-transparent"><a class="text-sm leading-snug transition-colors duration-150 text-gray-500 hover:text-gray-900" href="#conclusions">Conclusions</a></li></ul></nav><div class="mt-8"><p class="text text-xs">Share on social</p><div class="flex gap-1.5 mt-3"><a href="https://www.linkedin.com/sharing/share-offsite?url=https://www.checklyhq.com/blog/heroku-to-aws-migration/" target="_blank" rel="noopener noreferrer" class="button w-8 h-8 p-0 rounded-full flex justify-center items-center transition-transform duration-100 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All rights reserved.</small></div></div></footer></div></div><script id="__NEXT_DATA__" type="application/json">{"props":{"pageProps":{"publish_date":"2025-01-16","title":[{"type":"heading1","text":"How We Migrated Checkly From Heroku to AWS","spans":[],"direction":"ltr"}],"authors":[{"author":{"id":"ZhfuNhEAAEo431lm","type":"person","tags":[],"lang":"en-us","slug":"daniel-paulus","first_publication_date":"2024-04-11T14:05:44+0000","last_publication_date":"2024-08-27T13:39:21+0000","uid":"daniel-paulus","data":{"name":"Daniel Paulus","position":"VP of Engineering","social_links":[{"label":"LinkedIn","link":{"link_type":"Web","key":"e3c7f38b-ecfa-4693-89b1-266be4a5240b","url":"https://www.linkedin.com/in/daniel-paulus-checkly/","target":"_blank"}},{"label":"X","link":{"link_type":"Web","key":"677be9ff-8f58-4870-84a8-874bae88f076","url":"https://twitter.com/Daniel1Paulus","target":"_blank"}}],"image":{"dimensions":{"width":512,"height":512},"alt":null,"copyright":null,"url":"https://images.prismic.io/checklyhq/Zhft8jjCgu4jzwNU_daniel-paulus.png?auto=format,compress","id":"Zhft8jjCgu4jzwNU","edit":{"x":0,"y":0,"zoom":1,"background":"transparent"}}},"link_type":"Document","key":"607f9ccb-2f05-45af-8564-576e653238b9","isBroken":false}},{"author":{"id":"ZD1n4BEAACEAmsKH","type":"person","tags":[],"lang":"en-us","slug":"umut-uzgur","first_publication_date":"2023-04-28T19:49:25+0000","last_publication_date":"2024-08-27T13:36:52+0000","uid":"umut","data":{"name":"Umut Uzgur","position":"Senior Engineering Team Lead","social_links":[{"label":null,"link":{"link_type":"Web","key":"63ff4b8e-f1c0-4d95-bb07-ed9a829f4318","url":"https://www.linkedin.com/in/umutuzgur/","target":"_blank"}}],"image":{"dimensions":{"width":800,"height":800},"alt":null,"copyright":null,"url":"https://images.prismic.io/checklyhq/afc7d131-2153-43f7-893e-6f6b21fce189_1619779697636.jpeg?auto=compress,format","id":"ZXn_1hEAACAALkpw","edit":{"x":0,"y":0,"zoom":1,"background":"#fff"}}},"link_type":"Document","key":"990c61a7-04d2-460e-80de-b91989ab3b89","isBroken":false}}],"tags":[{"tag":{"id":"ZD2NihEAACMAm3Lv","type":"article_tag","tags":[],"lang":"en-us","slug":"devops","first_publication_date":"2023-04-28T19:48:54+0000","last_publication_date":"2023-04-28T19:48:54+0000","uid":"devops","data":{"name":[{"type":"paragraph","text":"devops ","spans":[]}]},"link_type":"Document","key":"7ae1f80f-aa3c-44fa-a36b-2c97f0bb2228","isBroken":false}}],"image":{"dimensions":{"width":1600,"height":900},"alt":null,"copyright":null,"url":"https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format,compress","id":"Z4q7upbqstJ99ljS","edit":{"x":0,"y":0,"zoom":1,"background":"transparent"}},"slices":[{"primary":{"content":[{"type":"paragraph","text":"Several years ago—in 2016, to be exact—we decided to host the Checkly platform on Heroku, since it was the hosted cloud offering (at the time) that best aligned with our needs. In particular, we felt that Heroku offered the best PostgreSQL cloud offering available at the time.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"But just as individuals grow and change over their lifetimes, such is the case with Checkly: We reached the point around 2022 that we needed to consider another hosting solution, and decided to move from Heroku to AWS as our hosting provider.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"We thought it would be interesting to share some of our thoughts and learnings from this process, so we decided to write a blog post about our experiences.","spans":[],"direction":"ltr"},{"type":"heading2","text":"Hosting on Heroku","spans":[{"start":0,"end":17,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"As mentioned previously, we had been hosting Checkly on Heroku since 2016. We started with a 300GB data instance with four cores, and had a high availability standby setup if our instance went down. In terms of pricing plans we standard with their standard “Standard 0” pricing plan, and eventually expanded to their “Premium 4” plan. (For more details on pricing, see the Heroku pricing page.)","spans":[{"start":373,"end":392,"type":"hyperlink","data":{"link_type":"Web","url":"https://elements.heroku.com/addons/heroku-postgresql","target":"_blank"}}],"direction":"ltr"},{"type":"paragraph","text":"While we were largely happy with our experience with Heroku, there were some Heroku-specific issues we encountered that necessitated the need to switch to another hosting platform.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"In general, one of the biggest reasons behind the switch was that Heroku started to become a burden for our tech stack . More specifically, Heroku’s platform made it difficult for us to upgrade to the latest version of PostgreSQL. We were running PostgreSQL v10—and wanted to upgrade to PostgreSQL 13—and Heroku told us that they were going to discontinue support for PostgreSQL 10 by the end November 2022. Given that PostgreSQL is a vital component of our tech stack, that obviously wasn’t going to work for us!","spans":[],"direction":"ltr"},{"type":"paragraph","text":"In addition, Postgres would sometimes go down briefly and then restart. Heroku relied on forced maintenance windows, which made it difficult for us to get support when we needed it. More specifically, here are some of the challenges we faced with our Heroku environment:","spans":[],"direction":"ltr"},{"type":"list-item","text":"Heroku PSQL had a smaller set of supported PSQL extensions","spans":[],"direction":"ltr"},{"type":"list-item","text":"There was no easy way to upgrade to a newer version of PSQL","spans":[],"direction":"ltr"},{"type":"list-item","text":"Heroku PSQL plans had fixed size disk space offerings and it required a complicated migration to move to a bigger plan","spans":[],"direction":"ltr"},{"type":"list-item","text":"Many essential tasks required an experienced PSQL engineer to tackle them","spans":[],"direction":"ltr"},{"type":"heading2","text":"Growing Pains: Moving to AWS","spans":[{"start":0,"end":28,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"For all the reasons outlined above, we decided to move from Heroku to AWS. Moving to AWS promised to solve some of our key pain points: The ability to seamlessly upgrade to newer versions of PostgreSQL as needed and to have more flexibility with regards to maintenance windows, allowing us to set our own maintenance schedule based on our specific needs. After doing some research, we also realized that moving to AWS would relieve the requirement of having to have frequent involvement of senior engineers, as a lot of the require work could be accomplished by more junior engineers.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"As we started to put together our plans for the transition, we sketched out a four week timeline for the project. The entire process ended up taking us about five weeks to complete, but our planning process was extensive. Here’s an outline of the steps we mapped out:","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Capacity planning and RDS offering choice","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Choose the data replication method","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Dry run migration of production","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Collect data, improve, document and go back to 4 until thing are within expectation","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Migrate dev and staging environment","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Migrate production environment","spans":[],"direction":"ltr"},{"type":"heading2","text":"From Heroku to AWS: Moving the Data","spans":[{"start":0,"end":35,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"Our first—and largest—technical challenge was getting our data out of Heroku and into AWS. Handling large-scale data migration is always scary! Even with backups, there’s always a concern about moving data from one location to another. We also were faced with the fact that migrating data from Heroku to AWS was a new domain that we just stepped into, and was a task that none of us had completed before.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"Heroku had some default data exporting options, but after reviewing them we decided that all of the standard options weren’t viable for our specific use case, mainly because options would cause unacceptable amounts of downtime, and we also had 300GB of data to migrate! We ended up doing some research on non-standard export options from Heroku, and found an excellent article on Stackoverflow that outlined how you could work with Heroku to get additional, non-standard data export options that would make our task easier.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"In our specific case, we had some issues with converting data types from our PostgreSQL instance to the Amazon Relational Database Service (RDS). Heroku support suggested that we create a middleground EC2 instance running a PostgreSQL demon, then move the data from there to RDS.","spans":[{"start":104,"end":138,"type":"hyperlink","data":{"link_type":"Web","url":"https://aws.amazon.com/rds/","target":"_blank"}}],"direction":"ltr"},{"type":"paragraph","text":"We then explored three different approaches for getting our data from Heroku to RDS.","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"The first approach we investigated was the AWS data migration service. We tried this approach, but the process wasn’t seamless, and there were some errors we couldn’t overcome.","spans":[{"start":43,"end":69,"type":"hyperlink","data":{"link_type":"Web","url":"https://aws.amazon.com/dms/","target":"_blank"}}],"direction":"ltr"},{"type":"o-list-item","text":"Our second method was to use an extension from PostgreSQL called pglogical. We encountered some admin complexity here, and also had some issues with schema changes, so we decided to try a third option, which was…","spans":[{"start":65,"end":74,"type":"hyperlink","data":{"link_type":"Web","url":"https://github.com/2ndQuadrant/pglogical","target":"_blank"}}],"direction":"ltr"},{"type":"o-list-item","text":"…a new type of replication called logical replication, while we were using a previous replication approach called Write Ahead Logging (WAL) replication. We discovered that RDS does not support WAL replication, and native PostgreSQL replication doesn’t replicate database schema or table sequence changes.","spans":[{"start":34,"end":53,"type":"hyperlink","data":{"link_type":"Web","url":"https://www.postgresql.org/docs/current/logical-replication.html","target":"_blank"}},{"start":114,"end":151,"type":"hyperlink","data":{"link_type":"Web","url":"https://www.postgresql.org/docs/current/runtime-config-wal.html","target":"_blank"}}],"direction":"ltr"},{"type":"heading2","text":"Discussions about downtime","spans":[{"start":0,"end":26,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"We knew that downtime was inevitable, so we focused on how to minimize the downtime as much as possible. We looked at approaching our service downtime in two different ways: One with less downtime and more risk, and the other with more downtime and less risk.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"We weighed and debated both options, and then—after lots of debating and deliberation—opted for the approach with greater downtime but enhanced safety. We didn’t want any surprises with the migration, so we allocated a 30 minute period of downtime, although we only ended up using about 10 minutes of the window.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"Our planning and deliberation around the amount of downtime was extensive. If we were any other type of company—other than someone that provides 24/7 monitoring services like we do—you would plan the migration over the weekend. But as a company focused on monitoring services for uptime and reliability, do we really want to take the service offline on the weekend?","spans":[],"direction":"ltr"},{"type":"paragraph","text":"Here’s the rationale: You do the migration on Saturday, and somebody doesn't get an essential alert over the weekend. So if the platform is down for 40 minutes on a weekend, and nobody's in the office to realize that, correct? There were some interesting decisions we had to take because we're in the monitoring domain.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"After that discussion, we decided the best course of action would be to treat it like an extended maintenance window, so the migration was scheduled for September 12th, 2022 at 7:00 AM UTC.","spans":[],"direction":"ltr"},{"type":"heading3","text":"Announcing the Migration","spans":[{"start":0,"end":24,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"We wanted to inform our customers of the upcoming extended maintenance window, so we sent an email that concisely explained what was happening.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"Internally, we practiced for the migration: We tested the exercise three times on production to make sure that our data and timing was correct. We created and followed a playbook, spelling out every step we would take during the migration. We also pre-migrated some of the data thanks to some design decisions we took in our infrastructure early on, which helped us to accomplish the switchover in less than the scheduled time.","spans":[],"direction":"ltr"},{"type":"heading2","text":"Migration Day!","spans":[{"start":0,"end":14,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"Like any big migration, part of the work was to define the playbook for the team, ours look like this (omitting the migration scripts and AWS config files):","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Announce schema change freeze on Friday","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"pg_dump Heroku for schemas and push it to RDS on Friday","spans":[{"start":0,"end":7,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Disable preboot on on heroku services","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Start EC2 PSQL with wal-e recovery","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Wait until EC2 PSQL catches up with the latest WAL","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Stop Heroku Schedulers","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"MAINTENANCE WINDOW STARTS","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Scale down all daemons to 0","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Move all connections to read-only ALERT DATABASE \u003cdbname\u003e SET default_transaction_read_only=on","spans":[{"start":34,"end":94,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Promote EC2 PSQL pg_ctl promote -D /database/","spans":[{"start":17,"end":45,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Give EC2 PSQL replication rights ALTER ROLE \u003cusername\u003e WITH REPLICATION","spans":[{"start":33,"end":71,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Set statement_timeout to 0 on EC2 and RDS","spans":[{"start":4,"end":21,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Start replication for the tables from EC2 to RDS","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Wait until RDS catches up","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Sync tables sequences with api/script/sync-sequences.js","spans":[{"start":27,"end":55,"type":"label","data":{"label":"inline-code"}}],"direction":"ltr"},{"type":"o-list-item","text":"Drop the replication subscriptions","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Update database url in in the services","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Scale up all services again","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Enable preboot for checkly-api and checkly-cron-daemon again","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Monitor the RDS database and validate new data coming in","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Monitor the services and make sure the services are healthy","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Restart Heroku Schedulers","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"MAINTENANCE WINDOW ENDS","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"After everything is over, kill EC2 and enjoy your day.","spans":[],"direction":"ltr"},{"type":"paragraph","text":"While it’s lovely to envision an ‘infrastructure as code’ world where even migrations are just scripts and config that require no human checklists, in the real world migration from one cloud to another will always require a certain amount of human planning and human intervention. This is especially the case when moving up in cloud scale. Sadly no one at AWS is spending all their time writing ‘lift and shift’ guides for migrating complex architecture from heroku, though smaller cloud providers certainly have done that work to help new customers leave AWS.","spans":[],"direction":"ltr"},{"type":"heading3","text":"Mission Accomplished","spans":[{"start":0,"end":20,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"During the migration, everything went according to plan. We had no hiccups, no glitches, and everything went smoothly and we didn’t have to perform any last-minute minute operations or fire drills.","spans":[],"direction":"ltr"},{"type":"heading2","text":"What we learned from our Heroku to AWS migration","spans":[{"start":0,"end":48,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"After successfully completing our migration project, we have some learnings that are hopefully useful to others attempting the same project. That includes:","spans":[],"direction":"ltr"},{"type":"list-item","text":"Use partitioned tables so you can pre-migrate some of the data. If you have immutable data partitioned, you can migrate data before your maintenance window.","spans":[],"direction":"ltr"},{"type":"list-item","text":"Make sure that your timeouts are set correctly","spans":[],"direction":"ltr"},{"type":"list-item","text":"It’s better to overspend on the size of your RDS instance and downgrade later if you don’t need that much capacity. It’s much less painful to have more than you need that not enough!","spans":[],"direction":"ltr"},{"type":"list-item","text":"Do fire drills - make sure you have an ordered list playbook","spans":[],"direction":"ltr"},{"type":"list-item","text":"Test, test, and retest to make sure everything works","spans":[],"direction":"ltr"},{"type":"list-item","text":"Downtime is inevitable! Just minimize it as much as you can.","spans":[],"direction":"ltr"},{"type":"heading2","text":"Conclusions","spans":[],"direction":"ltr"},{"type":"paragraph","text":"Migrating from one cloud provider to another is a significant undertaking, and for CTOs and operations teams considering such a move, there are several key takeaways from our migration from Heroku to AWS:","spans":[],"direction":"ltr"},{"type":"o-list-item","text":"Evaluate the “why”: Ensure the decision to migrate is backed by clear, well-understood needs, such as scalability, performance improvements, or cost efficiency. In our case, the inability to upgrade PostgreSQL easily and the lack of flexibility in Heroku's infrastructure were major factors. Come back to this “why” at least once in your process before your decision is final, and don’t let a drive to ‘get it done’ stop you from evaluating if the plan still provides the promised benefit.","spans":[{"start":0,"end":19,"type":"strong"}],"direction":"ltr"},{"type":"o-list-item","text":"Plan Meticulously: A successful migration hinges on detailed planning. From understanding data replication methods to scheduling downtime and creating robust playbooks, every step needs careful consideration to avoid surprises.","spans":[{"start":0,"end":18,"type":"strong"}],"direction":"ltr"},{"type":"o-list-item","text":"Communicate Clearly: Inform stakeholders—including customers—well in advance about potential disruptions. Transparency builds trust, and a well-prepared customer base is more understanding during maintenance windows.","spans":[{"start":0,"end":20,"type":"strong"}],"direction":"ltr"},{"type":"o-list-item","text":"Test Extensively: Conduct multiple dry runs to iron out kinks and simulate the migration as closely as possible to identify potential pitfalls. This approach minimizes risks on the actual migration day.","spans":[{"start":0,"end":17,"type":"strong"}],"direction":"ltr"},{"type":"o-list-item","text":"Balance Risk and Downtime: Consider the trade-offs between shorter downtime with higher risk and longer downtime with lower risk. For us, prioritizing safety with a slightly longer downtime was the right decision.","spans":[{"start":0,"end":26,"type":"strong"}],"direction":"ltr"},{"type":"o-list-item","text":"Leverage Learnings: Post-migration, take stock of what went well and what could have been better. In our case, the value of partitioned tables, well-sized RDS instances, and clearly defined playbooks stood out.","spans":[{"start":0,"end":19,"type":"strong"}],"direction":"ltr"},{"type":"paragraph","text":"While migrations can seem daunting, with the right preparation and execution, they can unlock the scalability and flexibility needed to support your organization's growth. By sharing our journey, we hope to provide others with a roadmap to approach their own cloud migrations confidently. Remember, migrations are not just technical exercises—they’re strategic moves that require alignment across the technical and business sides of your organization.","spans":[],"direction":"ltr"}]},"items":[],"variation":"default","version":"sktwi1xtmkfgx8626","id":"rich_text$2221bc9f-4cc3-44ad-9679-dabee99a53f2","slice_type":"rich_text","slice_label":null}],"relatedArticles":[],"last_publication_date":"2025-03-11T12:42:55+0000","seo":{"title":"How We Migrated Checkly from Heroku to AWS: Lessons Learned","description":"Checkly’s journey from Heroku to AWS—challenges, key learnings, and best practices for a smooth cloud migration. Read our insights.","image":{"dimensions":{"width":1600,"height":900},"alt":null,"copyright":null,"url":"https://images.prismic.io/checklyhq/Z4q7upbqstJ99ljS_HerokuAWSMigration.png?auto=format,compress","id":"Z4q7upbqstJ99ljS","edit":{"x":0,"y":0,"zoom":1,"background":"transparent"}}},"canonical":"https://www.checklyhq.com/blog/heroku-to-aws-migration/","uid":"heroku-to-aws-migration","breadcrumbs_title":[{"type":"paragraph","text":"From Heroku to AWS","spans":[],"direction":"ltr"}],"authorDetails":[{"name":"Daniel Paulus","url":"https://www.checklyhq.com/blog/author/daniel-paulus/","sameAs":["https://www.linkedin.com/in/daniel-paulus-checkly/","https://twitter.com/Daniel1Paulus"]},{"name":"Umut Uzgur","url":"https://www.checklyhq.com/blog/author/umut/","sameAs":["https://www.linkedin.com/in/umutuzgur/"]}]},"__N_SSG":true},"page":"/blog/[uid]","query":{"uid":"heroku-to-aws-migration"},"buildId":"mXzTdbXoRITmWIy8mZCIh","isFallback":false,"dynamicIds":[7887],"gsp":true,"scriptLoader":[]}</script></body></html> |