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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-438/">SRE Weekly Issue #438</a></h1>
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<div class="entry-date" itemprop="datePublished" >
<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-438/">August 18, 2024</a>
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<p><a class="email_only" href="https://sreweekly.com/sre-weekly-issue-438/">View on sreweekly.com</a></p>
<p class="wp-block-paragraph">Are there any blind or low-vision readers out there that would be willing to answer a few questions? I&#8217;m looking to learn more about your experience of reading a newsletter like this and the articles I link to. If you&#8217;re interested, please drop me an email at lex at sreweekly dot com. Thanks!</p>
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<h2 style="text-align: center;font-size: 80%;color: #909090;">A message from our sponsor, <a href="https://firehydrant.com/">FireHydrant</a>:</h2>
<p>Migrate off of PagerDuty, save money, and then have all of your configuration exported as Terraform modules? We did that. We know one of the hardest parts of leaving a legacy tool is the old configuration, that&#8217;s why we dedicated time to build the Signals migrator, making it easy to switch.</p>
<p><a href="https://firehydrant.com/blog/speedrun-to-signals-automated-migrations-are-here/">https://firehydrant.com/blog/speedrun-to-signals-automated-migrations-are-here/</a></p>
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<div class="sreweekly-title"><a href="https://engineering.mixpanel.com/automate-rotating-credentials-using-terraform-b0e7dab4d793" target="_blank" rel="noopener">Automate Rotating Credentials using Terraform</a></div>
<div class="sreweekly-description">
<p>This article shows how to use <code>timed_rotating</code> and <code>multirotate_set</code> to regularly rotate credentials using Terraform.</p>
<p>&nbsp;&nbsp;<small>Andy Leap &mdash; Mixpanel</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.honeycomb.io/blog/making-room-for-lint" target="_blank" rel="noopener">Making Room for Some Lint</a></div>
<div class="sreweekly-description">
<p>After an incident involving a database schema change, this engineer created a linting system for schema changes to catch painful ones that would cause a full table rewrite.</p>
<p>&nbsp;&nbsp;<small>Fred Hebert &mdash; Honeycomb</small></p>
<p>&nbsp;&nbsp;<small><em>Full disclosure: Honeycomb is my employer.</em></small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://workos.com/blog/from-four-to-five-9s-of-uptime-by-migrating-to-kubernetes" target="_blank" rel="noopener">From four to five 9s of uptime by migrating to Kubernetes</a></div>
<div class="sreweekly-description">
<p>Finding Heroku and alternative services lacking for various reasons, these folks built their own Heroku-like platform on top of Kubernetes and migrated their service to it.</p>
<p>&nbsp;&nbsp;<small>Matheus Lichtnow &mdash; WorkOS</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://biriukov.dev/docs/resolver-dual-stack-application/0-sre-should-know-about-gnu-linux-resolvers-and-dual-stack-applications/" target="_blank" rel="noopener">What every SRE should know about GNU/Linux resolvers and Dual-Stack applications</a></div>
<div class="sreweekly-description">
<p>It&#8217;s anything but simple to handle IPv4 and IPv6 in your service. This article covers the nitty-gritty details including dual-stack resolvers and Happy Eyeballs.</p>
<p>&nbsp;&nbsp;<small>Viacheslav Biriukov</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.tines.com/blog/engineering-incidents-improvement/" target="_blank" rel="noopener">Thankful for incidents: embracing chaos to find clarity</a></div>
<div class="sreweekly-description">
<p>What&#8217;s great about an incident? It helps uncover latent flaws in your system, as happened to these folks during a Redis upgrade.</p>
<p>&nbsp;&nbsp;<small>Shayon Mukherjee</small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.pagerduty.com/blog/managing-vendor-incidents/" target="_blank" rel="noopener">Managing Vendor Incidents: Customer Impact That Isn&#8217;t Your Fault</a></div>
<div class="sreweekly-description">
<p>Tips on how to handle vendor incidents, from runbooks to incident management and post-incident review.</p>
<p>&nbsp;&nbsp;<small>Mandi Walls &mdash; PagerDuty</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2024/07/27/incidents-as-keys-to-a-lot-of-value/" target="_blank" rel="noopener">Incidents as keys to a lot of value</a></div>
<div class="sreweekly-description">
<p>Cool trick:</p>
<blockquote>
<p>[&#8230;] when an operational surprise happens, someone will remember “Oh yeah, I remember reading about something like this when incident XYZ happened”, and then they can go look up the incident writeup to incident XYZ and see the details that they need to help them respond.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Lorin Hochstein</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://brooker.co.za/blog/2024/07/25/cap-again.html" target="_blank" rel="noopener">Let&#8217;s Consign CAP to the Cabinet of Curiosities</a></div>
<div class="sreweekly-description">
<p>While the CAP theorem may be technically correct, the actual limitations it imposes on real-world systems have nuance.</p>
<blockquote>
<p>The reality is that CAP is nearly irrelevant for almost all engineers building cloud-style distributed systems, and applications on the cloud.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Marc Brooker</small></p>
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