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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-521/">SRE Weekly Issue #521</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-521/">June 14, 2026</a>
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<p><a class="email_only" href="https://sreweekly.com/sre-weekly-issue-521/">View on sreweekly.com</a></p>
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<h2 style="text-align: center; font-size: 80%; color: #909090;">A message from our sponsor, <a href="https://sreweekly.com/link/521">Bronto</a>:</h2>
<p><strong>Stuck with slow queries and scattered logs?</strong></p>
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<div class="sreweekly-title"><a href="https://greatcircle.com/blog/2026/03/24/swarming-is-a-feature/" target="_blank" rel="noopener">In incidents, swarming is a feature, not a bug</a></div>
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<blockquote>
<p>Spontaneous swarming of responders might seem like a nuisance that breaks our tidy mental models of incident response, but it’s actually very powerful. It’s something to facilitate and encourage, not simply tolerate.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Brent Chapman</small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://dzone.com/articles/exactly-once-processing" target="_blank" rel="noopener">Exactly Once Processing: Myth vs Reality</a></div>
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<p>The misconception is that the local assurances automatically combine to form a single end-to-end promise that spans brokers, processors, databases, outboxes, caches, webhooks, and external APIs.</p>
<p>&nbsp;&nbsp;<small> Irullappan irulandi &mdash; DZone</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.cloudflare.com/optimizing-core-unit-boot-time/" target="_blank" rel="noopener">How we reduced core unit boot time from hours to minutes</a></div>
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<p>When a firmware issue caused reboots for firmware upgrades to take four hours(!), they had to find a solution.</p>
<p>&nbsp;&nbsp;<small>Giovanni Pereira Zantedeschi, Nnamdi Ajah, and Omar Sheik-Omar &mdash; Cloudflare</small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://charitydotwtf.substack.com/p/ai-enthusiasts-are-in-a-race-against" target="_blank" rel="noopener">AI enthusiasts are in a race against time, AI skeptics are in a race against entropy</a></div>
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<p>This one strikes a balance on AI that really speaks to me.</p>
<blockquote>
<p>If you’re the one left holding the bag, you should generally get final say over what goes in that bag.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Charity Majors</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/airbnb-engineering/sitar-agent-building-a-reliable-dynamic-configuration-sidecar-at-scale-b7e00c152068" target="_blank" rel="noopener">Sitar-agent: Building a reliable dynamic configuration sidecar at scale</a></div>
<div class="sreweekly-description">
<blockquote>
<p>How Airbnb built a Kubernetes sidecar to deliver dynamic configuration reliably at scale.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Bo Teng &mdash; Airbnb</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.datadoghq.com/blog/engineering/postgresql-ha-kubernetes/" target="_blank" rel="noopener">When failover isn’t safe: Building high-availability PostgreSQL on Kubernetes</a></div>
<div class="sreweekly-description">
<blockquote>
<p>In this post, we’ll walk through how we redesigned our Kubernetes-based PostgreSQL clusters for failover safety, how we balanced durability against latency, and what we learned while validating this approach through benchmarking and failure testing.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Shree Sampath &mdash; Datadog</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://venturebeat.com/orchestration/when-claude-changed-everything-changed-managing-ai-blast-radius-in-production" target="_blank" rel="noopener">When Claude changed, everything changed: Managing AI blast radius in production</a></div>
<div class="sreweekly-description">
<p>The failure mode on this one is really interesting, and the bit about &#8220;infinite blast radius&#8221; caught my eye.</p>
<p>&nbsp;&nbsp;<small>Sarat Mahavratayajula ,Vijay Sagar Gullapalli &mdash; VentureBeat</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.ufried.com/blog/why_resilient_software_design_2/" target="_blank" rel="noopener">Why we need resilient software design &#8211; Part 2</a></div>
<div class="sreweekly-description">
<p>I&#8217;m enjoying this series so far, and I&#8217;m looking forward to reading the rest. It&#8217;s worth starting at part 1, but part 2 can stand on its own in a pinch.</p>
<p>&nbsp;&nbsp;<small>Uwe Friedrichsen</small></p>
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