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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-100/">SRE Weekly Issue #100</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-100/">December 3, 2017</a>
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<p><a href="https://sreweekly.com/sre-weekly-issue-100/" title="Permalink to SRE Weekly Issue #100" class="email_only">View on sreweekly.com</a><br />
Whoa, it&#8217;s issue #100! Thank you all so much for reading.</p>
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<h2 style="text-align: center; font-size: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>Integrate VictorOps into your SRE ops to support faster recovery and improved post-incident analysis. Get your free trial started today: <a href="http://try.victorops.com/SREWeekly/FreeTrial">http://try.victorops.com/SREWeekly/FreeTrial</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.snafucatchers.com/single-post/2017/11/14/void-Incidents-as-Untyped-Pointers" target="_blank"> void *: Incidents as Untyped Pointers</a></div>
<div class="sreweekly-description">
<p>Richard Cook wrote this short, incredibly insightful essay on how we can use incidents to improve our mental model of the system.</p>
<blockquote><p>An incident is the message from the underlying system about where the people who made and who operate that system are uncalibrated.</p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@mhat/a-short-example-of-why-dimensions-are-suuuuuper-valuable-67e880055eb0" target="_blank">a short example of why dimensions are suuuuuper valuable</a></div>
<div class="sreweekly-description">
<p>A nifty trip through a debugging session that shows the importance of being able to dig into high-cardinality fields in your monitoring system.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/devopslinks/how-to-monitor-the-sre-golden-signals-1391cadc7524?source=rss-e781fc30beac------2" target="_blank">How to Monitor the SRE Golden Signals</a></div>
<div class="sreweekly-description">
<p>Various sources list a couple of key metrics to keep an eye on, including request rate, error rate, latency, and others. This 6-part series defines the golden signals and shows how to monitor them in several popular systems.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://bravenewgeek.com/thrift-on-steroids-a-tale-of-scale-and-abstraction/" target="_blank">Thrift on Steroids: A Tale of Scale and Abstraction</a></div>
<div class="sreweekly-description">
<p>This article explains some downsides of Thrift and introduces the author&#8217;s solution: Frugal, a Thrift wrapper.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://aws.amazon.com/new/reinvent/" target="_blank">re:Invent 2017 | New Products &amp; Services</a></div>
<div class="sreweekly-description">
<p>re:Invent 2017 is over (whew) and now we have a raft of new products and features to play with. I&#8217;m going to leave the detailed analysis for <a href="https://lastweekinaws.com/">Last Week in AWS</a> and just point out a few bits of special interest to SREs:</p>
<ul>
<li>Hibernation for spot instances</li>
<li>T2 unlimited</li>
<li>EC2 spread placement groups</li>
<li>Aurora DB multi-master support (preview)</li>
<li>DynamoDB global tables</li>
</ul>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://codeascraft.com/2017/11/30/how-etsy-caches/" target="_blank"> How Etsy caches: hashing, Ketama, and cache smearing</a></div>
<div class="sreweekly-description">
<p>Etsy details their caching setup and explains the importance of consistent hashing in cache cluster design. I haven&#8217;t heard of their practice of &#8220;cache smearing&#8221; before, and I like it.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.acolyer.org/2017/11/30/the-role-of-software-in-spacecraft-accidents/" target="_blank">The role of software in spacecraft accidents</a></div>
<div class="sreweekly-description">
<blockquote><p>[&#8230;] &#8220;Success is ironically one of the progenitors of accidents when it leads to overconfidence and cutting corners or making tradeoffs that increase risk.&#8221; [&#8230;]</p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.gremlin.com/wont-get-fooled-again-95a3f2bb0a2e?source=rss----94cbb73a7983---4" target="_blank">Won’t Get Fooled Again</a></div>
<div class="sreweekly-description">
<p>Gremlin had an incident that was caused by filled disks. Because they&#8217;re Gremlin, they now purposefully fill a disk on a random server every day just to make sure their systems deal with it gracefully, a practice they call &#8220;continuous chaos&#8221;.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://cloudplatform.googleblog.com/2017/11/fearless-shared-postmortems-CRE-life-lessons.html?m=1" target="_blank">Fearless shared postmortems — CRE life lessons</a></div>
<div class="sreweekly-description">
<p>Google&#8217;s CRE team (Customer Reliability Engineering) discusses when to post public followups and how to write them. I love their idea of investigating where they got lucky during an incident, catching cases where things could have been much worse if not for serendipity. I&#8217;m going to start using that.</p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.techworm.net/2017/11/not-just-whatsapp-everyone.html">WhatsApp</a></li>
<li><a href="https://www.christiantoday.com/article/spotify-update-music-streaming-up-and-running-after-downtime-last-tuesday/120083.htm">Spotify</a></li>
<li><a href="http://www.ibtimes.com/j-crew-website-down-cyber-monday-check-out-not-working-2620128">J Crew</a></li>
<li><a href="http://www.ibtimes.com/southwest-airlines-website-down-booking-problems-monday-2620070">Southwest Airlines</a></li>
<li><a href="https://www.bleepingcomputer.com/news/technology/yahoo-groups-plagued-by-downtime-technical-issues-for-almost-a-week/">Yahoo Groups</a></li>
</ul>
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