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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-49/">SRE Weekly Issue #49</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-49/">November 27, 2016</a>
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<a href="https://sreweekly.com/sre-weekly-issue-49/" title="Permalink to SRE Weekly Issue #49" class="email_only">View on sreweekly.com</a>
<p>My vacation visiting the Mouse was awesome!  I had a lot of time to work on <a href="https://github.com/lexelby/inkscape-embroidery/tree/docs">a little project of mine</a>.  And now I&#8217;m back just in time for Black Friday and Cyber-whatever. Good luck out there, everyone!</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: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>2016/17 State of On-Call Webinar (with DevOps.com): Register to learn what 800+ survey respondents have to say about life on-call. <a href="http://try.victorops.com/2016_17_stateofoncall">http://try.victorops.com/2016_17_stateofoncall</a></p>
</div>
<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://bwhsafetymatters.org/2016/07/20/price-checking-for-prescriptions-results-in-dangerous-combination-of-medications/" target="_blank">Price-Checking for Prescriptions Results in Dangerous Combination of Medications</a></div>
<div class="sreweekly-description">
<p>Another issue of BWH&#8217;s <i>Safety Matters</i>, this time about a prescribing accident. The system seems to have been almost designed to cause this kind of error, so it&#8217;s good to hear that a fix was already about to be deployed.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.meddeviceonline.com/doc/do-you-make-this-critical-root-cause-analysis-rca-mistake-0001" target="_blank">Do You Make This Critical Root Cause Analysis (RCA) Mistake?</a></div>
<div class="sreweekly-description">
<p>This is a great article on identifying the true root cause(s) of an incident, as opposed to stopping with just a &#8220;direct cause&#8221;. I only wish it were titled, <i>Use These Five Weird Tricks to Run Your RCA!</i></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://codeascraft.com/2016/11/16/code-slush-holidays/" target="_blank">How Etsy Uses Code &#8220;Slush&#8221; to Manage Development During the Holidays</a></div>
<div class="sreweekly-description">
<p>Etsy describes how they do change management during the holidays:</p>
<blockquote><p>[&#8230;] at Etsy, we still push code during the holidays, just more carefully, it’s not a true code freeze, but a cold, melty mixture of water and ice. Hence, Slush.</p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://mail01.tinyletterapp.com/production-ready/always-leave-the-campground-cleaner-than-you-found-it/6751777-medium.com/production-ready/always-leave-the-campground-cleaner-than-you-found-it-b176a91bc0b5?c=c89e58e4-6eb7-4315-b12e-c8f3dae7ed01" target="_blank">Production Ready: Always Leave the Campground Cleaner Than You Found It</a></div>
<div class="sreweekly-description">
<p>This issue of <i>Production Ready</i> is about battling code rot through incrementally refactoring an area of a codebase while you&#8217;re doing development work that touches it.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://tech.shutterstock.com/2016/11/11/5-ways-to-hone-your-production-incident-postmortems/" target="_blank">5 ways to hone your production incident postmortems</a></div>
<div class="sreweekly-description">
<p>Shutterstock shares some tips they&#8217;ve learned from writing postmortems. My favorite part is about recording a timeline of events in an incident. I&#8217;ve found that reading an entire chat transcript for an incident can be tedious, so it can be useful to tag items of interest using a chat-bot command or a search keyword so that you can easily find them later.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://pages.catchpoint.com/OUTAGE-AMA.html" target="_blank">OUTAGE! AMA on-demand video</a></div>
<div class="sreweekly-description">
<p>The &#8220;Outage!&#8221; AMA happened while I was on vacation, and I still haven&#8217;t had a chance to listen to it. Here&#8217;s a link in case you&#8217;d like to.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://dzone.com/articles/10-devops-interview-questions-to-gauge-a-candidate" target="_blank">10 DevOps Interview Questions to Gauge a Candidate’s Real Knowledge</a></div>
<div class="sreweekly-description">
<p>My favorite:</p>
<blockquote><p>If something breaks in production, how do you know about it?</p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://dzone.com/articles/weaver-ill-behaved-microservice-emulator" target="_blank">Weaver: Ill-Behaved Microservice Emulator</a></div>
<div class="sreweekly-description">
<p>Weaver is a tool to help you identify problems in your microservice consumers by doing &#8220;bad&#8221; things like responding slowly to a fraction of requests.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.techweekeurope.co.uk/data-storage/how-barclays-avoids-downtime-chaos-200812" target="_blank">How Barclays Avoids Downtime Chaos</a></div>
<div class="sreweekly-description">
<p>Barclays reduced load on their mainframe by adding MongoDB as a caching layer to handle read requests. What the heck does &#8220;mainframe&#8221; mean in this decade, anyway?</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.prweb.com/releases/2016/11/prweb13858053.htm" target="_blank">SOASTA Report: Online Holiday Shoppers Will Only Wait for Two Seconds</a></div>
<div class="sreweekly-description">
<p>We&#8217;d do well to remember during this holiday season that several seconds of latency in web requests is tantamount to an outage.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://bravenewgeek.com/you-are-not-paid-to-write-code/" target="_blank">You Are Not Paid to Write Code</a></div>
<div class="sreweekly-description">
<p>Tyler Treat gives us an eloquently presented argument for avoiding writing code as much as possible, for the sake of stability.</p>
</div>
</div>
<h2>Outages</h2>
<p>So far, no big-name Black Friday outages. We&#8217;ll see what Cyber Monday has in store.</p>
<ul class="sreweekly-outages">
<li><a href="http://everestdc.com/documents/rfo/2016-11-15_IP_Network_Incident.pdf">Everest (datacenter)</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">
<p>Everest suffered a cringe-worthy network outage subsequent to a power failure. Power came off and on a couple of times, prompting their stacked Juniper routers to assume they&#8217;d failed in booting and go into failure recovery mode. Unfortunately, the secondary OS partitions on the two devices contained different JunOS versions, so they wouldn&#8217;t stack properly.</p>
<p>I&#8217;d really like to read the RFO on the power outage itself, but I can&#8217;t find it. If anyone has a link, could you please send it my way?</p>
</li>
</ul>
</li>
<li><a href="http://www.ibtimes.co.uk/argos-website-down-outage-hits-just-before-launch-black-friday-deals-1592047">Argos</a></li>
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