439 lines
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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-501/">SRE Weekly Issue #501</a></h1>
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<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-501/">December 14, 2025</a>
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<h2 style="text-align: center;font-size: 80%;color: #909090;">A message from our sponsor, <a href="https://fandf.co/4aInx3u">Depot</a>:</h2>
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<p>“Waiting for a runner” but the runner is online? <a href="https://fandf.co/4aInx3u">Depot debugs three cases</a> where symptoms misled engineers. Workflow permissions, Azure authentication, and Dependabot’s security context all caused failures that looked like infrastructure problems.</p>
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<div class="sreweekly-title"><a href="https://ufried.com/blog/ironies_of_ai_1/" target="_blank" rel="noopener">AI and the ironies of automation – Part 1</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>A thoughtful evaluation of current trends in AI through the lens of Lisanne Bainbridge’s classic paper, The Ironies of Automation. I really got a lot out of this one.</p>
|
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<p> <small>Uwe Friedrichsen</small></p>
|
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</div>
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</div>
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<div class="sreweekly-entry">
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<div class="sreweekly-title"><a href="https://netflixtechblog.com/100x-faster-how-we-supercharged-netflix-maestros-workflow-engine-028e9637f041" target="_blank" rel="noopener">100X Faster: How We Supercharged Netflix Maestro’s Workflow Engine</a></div>
|
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<div class="sreweekly-description">
|
||
<p>They supercharged the workflow engine by rewriting it. I like the way they explained why they settled on a full rewrite and the alternative options they considered.</p>
|
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<p> <small>Jun He, Yingyi Zhang, and Ely Spears — Netflix</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
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||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://authress.io/knowledge-base/articles/2025/11/01/how-we-prevent-aws-downtime-impacts" target="_blank" rel="noopener">How when AWS was down, we were not</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This one goes deep on how to build a reliable service on unreliable parts. Can retries improve your overall reliability? What about the reliability of the retry system itself?</p>
|
||
<p> <small>Warren Parad — Authress</small></p>
|
||
</div>
|
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</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://storiesfromtheedge.substack.com/p/cold-restart-resilience" target="_blank" rel="noopener">Cold-Restart Resilience: Because ‘It Starts’ Doesn’t Mean ‘It Works’</a></div>
|
||
<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p>In this article, we’ll explore how cold-restart dependencies form, why typical recovery designs break down, and what architectural principles can help systems <em>warm up faster</em> after a complete outage.</p>
|
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</blockquote>
|
||
<p> <small>Bala Kambala</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://uptimelabs.io/how-crisis-reveals-the-truth-about-complex-systems/" target="_blank" rel="noopener">How Crisis Reveals the Truth About Complex Systems</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This one goes into the qualities of a good post-incident review, the definition of resilience, and a discussion of blamelessness, drawing lessons from aviation.</p>
|
||
<p> <small>Gamunu Balagalla — Uptime Labs</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://www.youtube.com/watch?v=tcRxa6E1MUw" target="_blank" rel="noopener">The Heartbreaking Story of BOAC flight 712</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>It would be easy to blame the poor outcome of BOAC 712’s engine failure on human error since the pilots missed key steps in their checklists. Instead, the NTSB cited systemic issues, resulting in improvements in checklists and other areas.</p>
|
||
<p> <small>Mentour Pilot</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://blog.cloudflare.com/5-december-2025-outage/" target="_blank" rel="noopener">Cloudflare outage on December 5, 2025</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Cloudflare had another significant outage, though not as big as the one last month. This one was related to steps they took to mitigate the big React RCE vulnerability.</p>
|
||
<p> <small>Dane Knecht — Cloudflare</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
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<div class="sreweekly-entry">
|
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<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2025/12/06/quick-takes-on-the-dec-5-cloudflare-outage/" target="_blank" rel="noopener">Quick takes on the Dec 5 Cloudflare outage</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Lorin’s whole analysis is awesome, but there’s an especially incisive section at the end that uses math to put Cloudflare’s run of 2 recent big incidents in perspective.</p>
|
||
<p> <small>Lorin Hochstein</small></p>
|
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</div>
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