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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-505/">SRE Weekly Issue #505</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-505/">January 11, 2026</a>
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<h2 style="text-align: center;font-size: 80%;color: #909090;">A message from our sponsor, <a href="https://www.gethopp.app/?via=sreweekly">Hopp</a>:</h2>
<p>Paging at 2am? 🚨 Make incident triage feel like you’re at the same keyboard with Hopp.</p>
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<div class="sreweekly-title"><a href="https://medium.com/xandr-tech/2013-09-17-outage-postmortem-586b19ae4307" target="_blank" rel="noopener">2013–09–17 Outage Postmortem</a></div>
<div class="sreweekly-description"><p>An incident write-up from the archives, and it&#8217;s a juicy one. An update to their code caused a crash only after some time had passed, so their automated testing didn&#8217;t catch it before they deployed it worldwide.</p>
<p>&nbsp;&nbsp;<small>Xandr</small></p></div></div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2025/12/21/quick-takes-on-the-triple-zero-outage-at-optus-the-schott-review/" target="_blank" rel="noopener">Quick takes on the Triple Zero Outage at Optus – the Schott Review</a></div>
<div class="sreweekly-description"><p>This article covers an independent review of the Optus outage.</p>
<blockquote>
<p>I personally find it astounding that somebody conducting an incident investigation would not delve deeper into how a decision that appears to be astounding would have made sense in the moment.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Lorin Hochstein</small></p></div></div>
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<div class="sreweekly-title"><a href="https://blog.cloudflare.com/building-our-maintenance-scheduler-on-workers/" target="_blank" rel="noopener">How Workers powers our internal maintenance scheduling pipeline</a></div>
<div class="sreweekly-description"><p>Cloudflare needed a tool to look for overlapping impact across their many maintenance events in order to avoid unintentionally impairing redundancy.</p>
<p>&nbsp;&nbsp;<small>Kevin Deems and Michael Hoffmann &mdash; Cloudflare</small></p></div></div>
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<div class="sreweekly-title"><a href="https://utcc.utoronto.ca/~cks/space/blog/tech/ExpiryTimesAreDangerous" target="_blank" rel="noopener">Expiry times are dangerous, on &#8220;The dangers of SSL certificates&#8221;</a></div>
<div class="sreweekly-description"><p>Another great piece on expiration dates. I especially like the discussion of abrupt cliffs as a design choice.</p>
<p>&nbsp;&nbsp;<small>Chris Siebenmann &mdash; University of Toronto</small></p></div></div>
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<div class="sreweekly-title"><a href="http://queue.acm.org/detail.cfm?ref=rss&#038;id=3773094" target="_blank" rel="noopener">SRE Is Anti-Transactional: An API for interfacing with automaters</a></div>
<div class="sreweekly-description"><p>It&#8217;s not always easy to see how to automate a given bit of toil, especially when cross-team interactions are involved.</p>
<p>&nbsp;&nbsp;<small>Thomas A. Limoncelli and Christian Pearce &mdash; ACM Queue</small></p></div></div>
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<div class="sreweekly-title"><a href="https://ufried.com/blog/resilience_vs_fault_tolerance/" target="_blank" rel="noopener">Resilience vs. Fault tolerance</a></div>
<div class="sreweekly-description"><p>How do resilience and fault tolerance relate? Are they synonyms, do they overlap, or does one contain the other?</p>
<p>&nbsp;&nbsp;<small>Uwe Friedrichsen</small></p></div></div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.deductive.ai/blogs/datadog-thank-you-for-blocking-us" target="_blank" rel="noopener">Datadog, Thank You for Blocking Us: Why Vendor Lock-In No Longer Matters</a></div>
<div class="sreweekly-description"><p>After unexpectedly losing their observability vendor, these folks were able to migrate to a new solution within a couple days.</p>
<p>&nbsp;&nbsp;<small>Karan Abrol, Yating Zhou, Pratyush Verma, Aditya Bhandari, and Sameer Agarwal &mdash; Deductive.ai</small></p></div></div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://humansinsystems.com/blog/you-cant-debug-a-systems-by-blaming-a-person" target="_blank" rel="noopener">You Can’t Debug a System by Blaming a Person</a></div>
<div class="sreweekly-description"><p>A great dive into what blameless incident analysis really means.</p>
<blockquote>
<p>Blameless also doesn’t mean you stop talking about what people did. </p>
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<p>&nbsp;&nbsp;<small>Busra Koken</small></p></div></div>
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