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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-491/">SRE Weekly Issue #491</a></h1>
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<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-491/">August 24, 2025</a>
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<p><a class="email_only" href="https://sreweekly.com/sre-weekly-issue-491/">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://spacelift.io/">Spacelift</a>:</h2>
<p><strong>Infrastructure Security Virtual Event &#8211; This Wednesday, August 27</strong><br />
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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-title"><a href="https://podcast.thevoid.community/1793843/episodes/17564236-uptime-labs-and-the-multi-party-dilemma-part-i" target="_blank" rel="noopener">Uptime Labs and the Multi-Party Dilemma (Part I)</a></div>
<div class="sreweekly-description">
<p>This 2-part episode of The VOID Podcast is just awesome, and well worth a listen. The conversation is framed as a retrospective of a simulated incident, with a high level of expertise and experience in the incident participants and the retrospective facilitator. I have a lot to think about, especially the discussion of overload and the four ways people react to it.</p>
<p>  <small>Courtney Nash — The VOID Podcast, with guests Sarah Butt, Eric Dobbs, Alex Elman, and Hamed Silatani</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://dzone.com/articles/tail-sampling-observability-opentelemetry" target="_blank" rel="noopener">Tail Sampling: The Future of Intelligent Observability in Distributed Systems</a></div>
<div class="sreweekly-description">
<blockquote>
<p>Discover how tail sampling in OpenTelemetry enhances observability, reduces costs, and captures critical traces for faster detection and smarter system monitoring.</p>
</blockquote>
<p>&nbsp;&nbsp;<small> Rishab Jolly &mdash; DZone</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.datadoghq.com/blog/engineering/rust-timeseries-engine/" target="_blank" rel="noopener">Evolving our real-time timeseries storage again: Built in Rust for performance at scale</a></div>
<div class="sreweekly-description">
<p>Datadog has evolved their time series storage through five generations before, and now they&#8217;re on the sixth. Click through to find out what motivated each change and what&#8217;s different this time around.</p>
<p>&nbsp;&nbsp;<small>Khayyam Guliyev, Duarte Nunes, Ming Chen, and Justin Jaffray &mdash; Datadog</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.fb.com/2025/08/06/developer-tools/diff-risk-score-drs-ai-risk-aware-software-development-meta/" target="_blank" rel="noopener">Diff Risk Score: AI-driven risk-aware software development</a></div>
<div class="sreweekly-description">
<p>Meta uses a tool to automatically estimate the risk level of a code change. They&#8217;ve used this to reduce the use of code freezes.</p>
<p>&nbsp;&nbsp;<small>Meta</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://thenewstack.io/sre-report-retrospectives-have-aiops-predictions-held-up/" target="_blank" rel="noopener">SRE Report Retrospectives — Have AIOps Predictions Held Up?</a></div>
<div class="sreweekly-description">
<p>The authors of Catchpoint&#8217;s SRE Report look back at their analysis and predictions related to AIOps, compared to how things are unfolding now.</p>
<p>&nbsp;&nbsp;<small>Leo Vasiliou and Denton Chikura &mdash; The New Stack</small></p>
</div>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://clickhouse.com/blog/llm-observability-challenge" target="_blank" rel="noopener">Can LLMs replace on call SREs today?</a></div>
<div class="sreweekly-description">
<p>I love the approach and the level of detail in this article. They gave four LLMs access to observability data in a simulated infrastructure and asked them to troubleshoot a problem. It&#8217;s super useful to see the actual results from the LLMs.</p>
<p>&nbsp;&nbsp;<small>Lionel Palacin and Al Brown &mdash; ClickHouse</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://uptimelabs.io/when-fast-flow-delivers-a-real-blow-a-pir/" target="_blank" rel="noopener">When Fast Flow Delivers A Real Blow: A PIR</a></div>
<div class="sreweekly-description">
<p>Uptime Labs goes meta by sharing the details of an incident they experienced last month, involving runaway creation of dynamic queues in RabbitMQ.</p>
<p>&nbsp;&nbsp;<small>Joe Mckevitt &mdash; Uptime Labs</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.cloudflare.com/cloudflare-incident-on-august-21-2025/" target="_blank" rel="noopener">Cloudflare incident on August 21, 2025</a></div>
<div class="sreweekly-description">
<p>I&#8217;m pretty impressed: Cloudflare published this article with a ton of detail on an incident, the day after it happened. A surge of traffic overloaded Cloudflare&#8217;s Data Center Internet connect links to AWS&#8217;s us-east-1 region.</p>
<p>&nbsp;&nbsp;<small>David Tuber, Emily Music, Bryton Herdes &mdash; Cloudflare</small></p>
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