444 lines
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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-484/">SRE Weekly Issue #484</a></h1>
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<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-484/">July 6, 2025</a>
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<div class="sreweekly-entry">
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<div class="sreweekly-title"><a href="https://about.gitlab.com/blog/exact-code-search-find-code-faster-across-repositories/" target="_blank" rel="noopener">Exact Code Search: Find code faster across repositories</a></div>
|
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<div class="sreweekly-description">
|
||
<p>This is really neat! They’ve developed a new approach to search that uses 3-letter “trigrams” rather than tokenizing words, making it especially well-suited to code search. It converts regular expressions to trigram searches behind the scenes.</p>
|
||
<p> <small>Dmitry Gruzd — GitLab</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
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<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2025/06/01/pattern-machines-that-we-dont-understand/" target="_blank" rel="noopener">Pattern machines that we don’t understand</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This article about LLMs is by a regularly featured author here in the newsletter. It’s not, strictly speaking, directly SRE-related, but I really got a lot out of it, so I’m including it anyway.</p>
|
||
<p> <small>Lorin Hochstein</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://www.thecoder.cafe/p/soft-hard-dependency" target="_blank" rel="noopener">Soft vs. Hard Dependency: A Better Way to Think About Dependencies for More Reliable Systems</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This one explains the difference between a soft and hard dependency, why it matters, and how to use this information to improve reliability. I like the section on soft dependencies evolving into hard dependencies when you’re not looking.</p>
|
||
<p> <small>Teiva Harsanyi — The Coder Cafe</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://www.datadoghq.com/blog/engineering/unwinding-shared-database/" target="_blank" rel="noopener">Breaking up a monolith: How we’re unwinding a shared database at scale</a></div>
|
||
<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p>In this post, we’ll walk through how we’re splitting apart our shared database into independently owned instances. We’ll explain how we defined the right boundaries, minimized risk during migrations, and built the tooling to make the process safe and scalable.</p>
|
||
</blockquote>
|
||
<p> <small>Fabiana Scala and Tali Gutman — Datadog</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://willgallego.com/2025/06/21/big-enough-to-fail/" target="_blank" rel="noopener">Big Enough to Fail</a></div>
|
||
<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p>At some point, the external dependencies which our systems rely on become so tightly coupled, large, and fundamental that should those foundations inevitably fail, that blame can actually go down in response to an incident.</p>
|
||
</blockquote>
|
||
<p>This thought-provoking article explores why we’re more tolerant of outages from large tech companies like Google Cloud or Salesforce, and what this means for how we think about reliability engineering and incident response.</p>
|
||
<p> <small>Will Gallego</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://aws.amazon.com/blogs/database/use-aws-fis-to-test-the-resilience-of-self-managed-cassandra/" target="_blank" rel="noopener">Use AWS FIS to test the resilience of self-managed Cassandra</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>This practical guide shows how to use AWS Fault Injection Service (FIS) to perform chaos engineering experiments on self-managed Cassandra clusters. It walks through setting up experiments to test node failure scenarios and validate that applications can properly handle database outages through connection pooling and retry mechanisms.</p>
|
||
<p> <small>Hans Nesbitt and Lwanga Phillip — AWS</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://klaviyo.tech/building-a-billing-usage-recovery-system-b6e741e9f07e" target="_blank" rel="noopener">Building a Billing Usage Recovery System</a></div>
|
||
<div class="sreweekly-description">
|
||
<p>Klaviyo shares how they built an automated recovery system to handle billing usage tracking failures. The system uses S3 for data storage and SQS for message queuing to ensure that missed usage events are automatically recovered, eliminating manual intervention and reducing customer confusion.</p>
|
||
<p> <small>Kaavya Antony — Klaviyo</small></p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="sreweekly-entry">
|
||
<div class="sreweekly-title"><a href="https://engineering.hellofresh.com/taming-complexity-hellofreshs-playbook-for-managing-large-scale-change-part-3-3-ec0fd8bc6cd9" target="_blank" rel="noopener">Taming Complexity: HelloFresh’s Playbook for Managing Large-Scale Change (Part 3/3)</a></div>
|
||
<div class="sreweekly-description">
|
||
<blockquote>
|
||
<p><em>Final stretch! We’ve handled people and processes, now let’s crack the code side and stitch everything together into a four-stage framework you can reuse.</em></p>
|
||
</blockquote>
|
||
<p>In case you missed them:</p>
|
||
<ul>
|
||
<li><a href="https://engineering.hellofresh.com/taming-complexity-hellofreshs-playbook-for-managing-large-scale-programs-part-1-3-cdf06c5a6ed9">part 1</a></li>
|
||
<li><a href="https://engineering.hellofresh.com/taming-complexity-hellofreshs-playbook-for-managing-large-scale-change-part-2-3-516dc3961e26">part 2</a></li>
|
||
</ul>
|
||
<p> <small>Konstantin Rohleder — HelloFresh</small></p>
|
||
</div>
|
||
</div>
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