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<header class="entry-header cf">
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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-472/">SRE Weekly Issue #472</a></h1>
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<div class="entry-date" itemprop="datePublished" >
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<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-472/">April 13, 2025</a>
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<h2 style="text-align: center;font-size: 80%;color: #909090;">A message from our sponsor, <a href="https://incident.io/">incident.io</a>:</h2>
|
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<p>We’ve just raised $62M at incident.io to build AI agents that resolve incidents with you. See how we’re pioneering a new era of incident management. </p>
|
||
<p><a href="https://go.incident.io/blog/incident.io-raises-62m">https://go.incident.io/blog/incident.io-raises-62m</a></p>
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</div>
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<div class="wp-block-group"><div class="wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow">
|
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<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://engblog.nextdoor.com/scaling-nextdoors-datastores-part-4-c9d3d3edcd34" target="_blank" rel="noopener">Scaling Nextdoor’s Datastores: Part 4</a></div>
|
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<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p>In this part of the Scaling Nextdoor’s Datastores blog series, we will see how the Core-Services team at Nextdoor keeps its cache consistent with database updates and avoids stale writes to the cache.</p>
|
||
</blockquote>
|
||
<p> <small>Ronak Shah — Nextdoor</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://incident.io/blog/going-beyond-mttx" target="_blank" rel="noopener">Going beyond MTTx and measuring “good” incident management</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Okay, if <a href="https://resilienceinsoftware.org/news/1157532">we’re not supposed to use MTTR</a>, what metrics in incident response are better?</p>
|
||
<p> <small>Chris Evans — incident.io</small></p>
|
||
<p> <small><em>This article is published by my sponsor, incident.io, but their sponsorship did not influence its inclusion in this issue.</em></small></p>
|
||
</div>
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||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="http://notes.eatonphil.com/2025-03-27-things-that-go-wrong-with-disk-io.html" target="_blank" rel="noopener">Things that go wrong with disk IO</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This reminds me of the <a href="https://en.wikipedia.org/wiki/Fallacies_of_distributed_computing">Fallacies of Distributed Computing</a>, and it’s equally important to internalize. Disk I/O isn’t guaranteed.</p>
|
||
<p> <small>Phil Eaton</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://www.youtube.com/watch?v=_TskvZa8Tgo" target="_blank" rel="noopener">Critical Step MISSED! | What Happened on Jet2 Flight 2152?!</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Here’s a great example of how we can learn a ton from near misses. In this airplane incident, a slight change in the normal takeoff sequence resulted in missing a critical step. As a result of this near miss, the aviation industry still instituted changes to make this kind of problem less likely.</p>
|
||
<p> <small>Mentour Pilot — YouTube</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://ufried.com/blog/coupling_2/" target="_blank" rel="noopener">(Un)coupling in distributed systems – Part 2</a></div>
|
||
<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p>In this second and final post of this little blog series, we will discuss the redundancy fallacy and the 3rd type of coupling, we need to consider in the context of remote communication, which is temporal coupling.</p>
|
||
</blockquote>
|
||
<p> <small>Uwe Friedrichsen</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2025/04/06/model-error/" target="_blank" rel="noopener">Model error</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>All of our systems have embedded models of the world. What happens when these models are wrong?</p>
|
||
<p> <small>Lorin Hochstein</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://humansinsystems.com/blog/three-guiding-lights-on-sustaining-resilience" target="_blank" rel="noopener">Three Guiding Lights on Sustaining Resilience</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This article answers this question:</p>
|
||
<blockquote>
|
||
<p>“If we had to choose just three things to sustain a resilient, healthy reliability culture, what would they be?”</p>
|
||
</blockquote>
|
||
<p>with these three things:</p>
|
||
<blockquote>
|
||
<ol>
|
||
<li>Know what matters to your users, and make it really visible</li>
|
||
<li>Create Psychological Safety Around Failure</li>
|
||
<li>Let incidents update your mental models</li>
|
||
</ol>
|
||
</blockquote>
|
||
<p> <small>Busra Koken</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://uptimelabs.io/hot-take-i-want-execs-closer-to-incidents-not-farther/" target="_blank" rel="noopener">Hot Take: I Want Execs Closer to Incidents, Not Farther</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Execs intruding in incidents can have a disruptive effect, which this article acknowledges with specific examples. It goes on to list some concrete and useful things execs <em>can</em> do to support incident response.</p>
|
||
<p>By the way, <strong>massive</strong> props to the Uptime Labs folks. They created an RSS feed for their blog at my request with a super-fast turnaround. Incredible!</p>
|
||
<p> <small>Hamed Silatani — Uptime Labs</small></p>
|
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</div>
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