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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-215/">SRE Weekly Issue #215</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-215/">April 19, 2020</a>
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<a href="https://sreweekly.com/sre-weekly-issue-215/" title="Permalink to SRE Weekly Issue #215" class="email_only">View on sreweekly.com</a>
<p>I missed last week to set up a new swing set for my kids (gotta give &#8217;em something to do while they&#8217;re stuck at home). I&#8217;m still a bit behind on articles and I&#8217;ll catch up over the next couple weeks.</p>
<div class="sreweekly-sponsor-message" style="border: 1px solid #b0b0b0; padding-left: 1rem; padding-right: 1rem; width: 80%; align: center; margin: 2rem auto 2rem auto;">
<h2 style="text-align: center; font-size: 80%; color: #909090;">A message from our sponsor, VictorOps:</h2>
<p>Our people and tools need to be connected now more than ever before. That’s why VictorOps is offering free, 90-day extended Enterprise trials for on-call incident response and alert management, up to 100 users, to anyone who needs it:</p>
<p><a href="https://go.victorops.com/sreweekly-extended-trials-for-incident-response">https://go.victorops.com/sreweekly-extended-trials-for-incident-response</a></p>
</div>
<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2020/04/18/embracing-the-beautiful-mess/" target="_blank">Embracing the beautiful mess</a></div>
<div class="sreweekly-description">
<p>The &#8220;messy&#8221; details of our human/computer systems is their hidden strength.</p>
<p><small>Lorin Hochstein</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://youtu.be/BML2lfqaK-4" target="_blank">Accident Case Study: Just a Short Flight</a></div>
<div class="sreweekly-description">
<p>In this accident report, learn how two pilots lost situational awareness, with disastrous consequences.</p>
<p><small>Air Safety Institute</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.squadcast.com/blog/succeeding-with-service-level-objectives" target="_blank">Succeeding With Service Level Objectives</a></div>
<div class="sreweekly-description">
<blockquote><p>Without a structured strategy, and careful consideration of the full SLO lifecycle, SLOs risk partial implementation. This can result in low ROI and, in many cases, a complete failure.</p></blockquote>
<p><small>Danny Mican — Squadcast</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@serhatcan/why-global-infrastructure-matters-how-aws-helps-62e7f7e28eb0" target="_blank">Back to Basics: Why Global Infrastructure Matters</a></div>
<div class="sreweekly-description">
<p>The cloud&#8217;s multiple availability zones and regions can be powerful, but it&#8217;s hard to get a multi-region architecture correct.</p>
<p><small>Serhat Can — OpsGenie</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://tryhexadecimal.com/sla-uptime-calculator" target="_blank">SLA Uptime calculator</a></div>
<div class="sreweekly-description">
<p>A useful little JavaScript tool: plug in an availability percentage (e.g. 99.99%), and get back the number of minutes you can be down in a day, month, quarter, or year.</p>
<p><small>Hexadecimal</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://status.dev.azure.com/_event/181122901/post-mortem" target="_blank">Hosted Pools Availability Degradation</a></div>
<div class="sreweekly-description">
<p>Azure Pipelines had an incident of delayed builds at the end of March. Find out more in this post-incident analysis.</p>
<p><small>Chad Kimes &#8211; Microsoft</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://highscalability.com/blog/2020/4/9/free-google-book-building-secure-and-reliable-systems.html" target="_blank">Free Google Book: Building Secure and Reliable Systems</a></div>
<div class="sreweekly-description">
<p>Google published another book in their SRE series. This short summary gives an overview of what&#8217;s inside along with an explanation of the motivation for another book. See also: <a href="https://cloud.google.com/blog/products/management-tools/learn-to-build-secure-and-reliable-systems-with-a-new-book-from-google/">Google&#8217;s announcement</a></p>
<p><small>Todd Hoff — High Scalability</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://highscalability.com/blog/2020/4/8/one-team-at-uber-is-moving-from-microservices-to-macroservic.html" target="_blank">One Team at Uber is Moving from Microservices to Macroservices</a></div>
<div class="sreweekly-description">
<p>The pendulum is swinging back, and folks are starting to see the downsides of a plethora of microservices, including early champions, Uber.</p>
<p><small>Todd Hoff — High Scalability</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.theverge.com/2020/4/6/21210050/quibi-outage-launch-day-service-down-app">Quibi</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Quibi had issues on their launch day.</li>
</ul>
</li>
<li><a href="https://www.thesun.co.uk/money/11346188/deliveroo-app-and-website-down-leaving-customers-unable-to-order/">Deliveroo</a></li>
<li><a href="http://status.cloud.google.com/incident/zall/20005#20005004">Google Cloud Platform IAM</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Click through for their interesting post-incident analysis.</li>
</ul>
</li>
<li><a href="https://www.cloudflarestatus.com/incidents/g7nd3k80rxdb">Cloudflare</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Here&#8217;s their <a href="https://blog.cloudflare.com/cloudflare-dashboard-and-api-outage-on-april-15-2020/">post-incident analysis</a> that details a remote hands request gone awry.</li>
</ul>
</li>
<li><a href="https://status.chef.io/incidents/51k4yqfrmp1y">Chef</a></li>
<li><a href="https://www.animatedtimes.com/hulu-went-down/">Hulu</a></li>
<li><a href="https://q13fox.com/2020/04/15/online-banking-outages-reported-on-same-day-millions-of-americans-receive-stimulus-payment/">Lots of Banks in the US</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Banks went down around the time when customers were checking to see if their economic stimulus payments had arrived.</li>
</ul>
</li>
<li><a href="https://www.gearbrain.com/petnet-smart-feeder-down-again-2645724215.html">Petnet (smart pet feeder)</a></li>
<li><a href="https://www.express.co.uk/life-style/science-technology/1268920/Snapchat-DOWN-not-working-server-status-latest">Snapchat</a></li>
<li><a href="https://www.rt.com/news/485590-twitter-down-users-access/">Twitter</a></li>
<li><a href="https://status.fastly.com/incidents/87pydb7zpbxy">Fastly</a></li>
<li><a href="https://reddit.statuspage.io/incidents/24srv7k0b642">Reddit</a></li>
<li><a href="https://twitter.com/DoorDash_Help/status/1250431160900976641">DoorDash</a></li>
<li><a href="https://status.stackpath.com/incidents/22c999cbl1nh">StackPath</a></li>
</ul>
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