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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-53/">SRE Weekly Issue #53</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-53/">January 1, 2017</a>
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<a href="https://sreweekly.com/sre-weekly-issue-53/" title="Permalink to SRE Weekly Issue #53" class="email_only">View on sreweekly.com</a>
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<h2 style="text-align: center; font-size: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>The &#8220;2016/17 State of On-Call&#8221; report from VictorOps is now available to download. Learn what 800+ respondents have to say about life on-call, and steps they&#8217;re taking to make it better. Get your free copy here: <a href="https://victorops.com/state-of-on-call">https://victorops.com/state-of-on-call</a></p>
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<h2>Articles</h2>
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<div class="sreweekly-title"><a href="http://bravenewgeek.com/take-it-to-the-limit-considerations-for-building-reliable-systems/" target="_blank">Take It to the Limit: Considerations for Building Reliable Systems</a></div>
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<blockquote><p>Without explicit limits, things fail in unexpected and unpredictable ways. Remember, the limits exist, they’re just hidden.</p></blockquote>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.awsarchitectureblog.com/2014/05/a-case-study-in-global-fault-isolation.html" target="_blank">A Case Study in Global Fault Isolation</a></div>
<div class="sreweekly-description">
<p>AWS gives us this in-depth explanation of their use of shuffle sharding in the Route 53 service. This is especially interesting given the Dyn DDoS attack a couple of months ago.</p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://jvns.ca/blog/2016/12/22/container-networking/" target="_blank">A container networking overview</a></div>
<div class="sreweekly-description">
<p>How does container networking work? Julia Evans points her curious mind toward this question and shares what she learned.</p>
<blockquote><p>[&#8230;] it’s important to understand what’s going on behind the scenes, so that if something goes wrong I can debug it and fix it.</p></blockquote>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.circonus.com/problem-math/" target="_blank">The Problem with Math: Why Your Monitoring Solution is Wrong</a></div>
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<p>More on the subject of percentiles and incorrect math this week from Circonus. The SLA calculation stuff is especially on point.</p>
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<div class="sreweekly-title"><a href="http://feedproxy.google.com/~r/sysadvent/~3/JTnv5LVbUZI/day-20-how-to-set-and-monitor-slas.html" target="_blank">sysadvent: Day 20 &#8211; How to set and monitor SLAs</a></div>
<div class="sreweekly-description">
<p>And speaking of SLAs, here&#8217;s an excellent article on how to design and adopt an SLA in your product or service.</p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://jvns.ca/blog/2016/12/23/systems-we-love/" target="_blank">Systems We Love 2016</a></div>
<div class="sreweekly-description">
<p>A summary of a few notable <a href="http://systemswe.love/">Systems We Love</a> talks. I&#8217;m so jealous of all of you folks that got to go!</p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.pagerduty.com/blog/oncallselfie/" target="_blank">#OnCallSelfie &#8211; PagerDuty</a></div>
<div class="sreweekly-description">
<p>PagerDuty added #OnCallSelfie support to their app. Amusingly, that first picture is of my (awesome) boss.  Hi, Joy!</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://azure.microsoft.com/en-us/blog/summary-of-windows-azure-service-disruption-on-feb-29th-2012/" target="_blank">Summary of Windows Azure Service Disruption on Feb 29th, 2012</a></div>
<div class="sreweekly-description">
<p>A post-analysis of an Azure outage from 2012. The especially interesting thing to me is the secondary outage caused by eagerness to quickly deploy a fix to the first outage. There&#8217;s a cognitive trap here: we become overconfident when we think we&#8217;ve found The Root Cause and we rush to deploy a patch.</p>
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<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="http://www.dailystar.co.uk/tech/gaming/573173/Battlefield-1-servers-down-PS4-Xbox-One">Battlefield 1</a></li>
<li><a href="http://www.dailymail.co.uk/news/article-4076792/Is-government-attacking-DRUDGE-REPORT-Popular-news-site-goes-90-minutes-prompting-founder-question-Obama-attack.html">Drudge Report</a></li>
<li><a href="https://www.internetretailer.com/2016/12/28/jcrew-extends-promotion-make-its-site-outage">J.Crew</a></li>
<li><a href="http://www.pakistantoday.com.pk/blog/2016/12/27/what-is-the-real-reason-behind-pakistans-massive-internet-outage/">Pakistan</a></li>
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