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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-117/">SRE Weekly Issue #117</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-117/">April 8, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-117/" title="Permalink to SRE Weekly Issue #117" class="email_only">View on sreweekly.com</a>
<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>“If it ain’t broke—let’s break it, fix it, then break it again, then fix it again.” Read more about making your SRE team(s) more proactive through chaos engineering: <a href="http://try.victorops.com/proactive-sre">http://try.victorops.com/proactive-sre</a></p>
</div>
<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://willgallego.com/2018/04/02/no-seriously-root-cause-is-a-fallacy/" target="_blank">No, seriously. Root Cause is a Fallacy. – </a></div>
<div class="sreweekly-description">
<p>Brilliant, just brilliant. This isn&#8217;t just another &#8220;there isn&#8217;t just one root cause&#8221; article to skip over. The author takes time to explain the concept with cogent examples and useful metaphors. This one really caught my eye:</p>
<blockquote><p><em>What’s the root cause of success?</em><br />
[&#8230;] When building a successful project, there’s never just one thing that goes right for it to succeed.</p></blockquote>
<p><small>Will Gallego</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://foodfightshow.org/2018/03/incident-management.html" target="_blank">Incident Management &#8211; Food Fight Podcast</a></div>
<div class="sreweekly-description">
<p>This episode of Food Fight is an hour-long interview with guests Rob Schnepp, Ron Vidal, and Chris Hawley, the 3 firefighters behind <a href="https://blackrock3.com">Blackrock 3 Partners</a>. It&#8217;s a great intro to the Incident Management System, and well worth a listen.</p>
<p>Shout-out to <a href="https://play.google.com/store/apps/details?id=com.sqr5.android.player_jb&amp;hl=en_US">Maple Player</a>, an android audio player with a really high-quality tempo increase feature. I was able to listen at 1.5x speed and still understand everything; otherwise, I wouldn&#8217;t have had time this week.</p>
<p><small>Nell Shamrell-Harrington and Nathen Harvey</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.twilio.com/blog/2013/07/billing-incident-post-mortem-breakdown-analysis-and-root-cause.html" target="_blank">Billing Incident Post-Mortem</a></div>
<div class="sreweekly-description">
<p>Here&#8217;s one from the archives, an incident report from 2013. After a temporary network partition in a redis cluster, the replicas all tried to resynchronize at once, overloading the master. One of the results was that some customers got repeatedly charged for the same thing.</p>
<p><small>Twilio</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rachelbythebay.com/w/2018/03/27/whowhat/" target="_blank">It&#8217;s about what broke, not who broke it</a></div>
<div class="sreweekly-description">
<blockquote><p>You have to design a system such that the natural thing to do yields a good result and doesn&#8217;t put anyone in harm&#8217;s way.</p></blockquote>
<p><small>Rachel Kroll</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@dgryski/consistent-hashing-algorithmic-tradeoffs-ef6b8e2fcae8" target="_blank">Consistent Hashing: Algorithmic Tradeoffs</a></div>
<div class="sreweekly-description">
<p>I thought consistent hashing was largely solved. I was wrong! There are some good solutions out there, but you have to evaluate their relative trade-offs and pick the right one for your use case.</p>
<p><small>Damian Gryski<br />
</small></p>
<p><small><em>Full disclosure: Damian Gryski is my coworker at Fastly.</em></small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.bostonglobe.com/ideas/2018/03/22/computer-science-faces-ethics-crisis-the-cambridge-analytica-scandal-proves/IzaXxl2BsYBtwM4nxezgcP/story.html" target="_blank">Computer science faces an ethics crisis. The Cambridge Analytica scandal proves it.</a></div>
<div class="sreweekly-description">
<p>As you read this article, consider the ethical imperative of system reliability, when system reliability can literally mean life and death in some cases. That&#8217;s only going to be more common in the coming years.</p>
<p><small> Yonatan Zunger </small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.hashicorp.com/blog/logic-monitor-uses-terraform-packer-and-consul-for" target="_blank">LogicMonitor Uses Terraform, Packer &amp; Consul for Disaster Recovery Environments</a></div>
<div class="sreweekly-description">
<blockquote><p>Our service needs to be available 24/7, without question. In order to ensure this happens, the LogicMonitor TechOps team uses HashiCorp Packer, Terraform, and Consul to dynamically build infrastructure for disaster recovery (DR) in a reliable and sustainable way.</p></blockquote>
<p><small>Randall Thomson — LogicMonitor</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.travis-ci.com/2018-04-03-incident-post-mortem" target="_blank">The Travis CI Blog: Incident Post-Mortem and Security Advisory: Data Exposure After travis-ci.com Outage</a></div>
<div class="sreweekly-description">
<blockquote><p>On Tuesday, 13 March 2018 at 12:04 UTC a database query was accidentally run against our production database which truncated all tables.</p></blockquote>
<p>Oof. Sorry, Travis folks, but a sincere thanks for sharing your experience with us.</p>
<p><small>Konstantin Haase — Travis CI</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://blog.catchpoint.com/2018/03/15/preliminary-analysis-site-reliability-engineer-survey/" target="_blank">Preliminary Analysis of the Site Reliability Engineer Survey</a></div>
<div class="sreweekly-description">
<p>I like these &#8220;preliminary results&#8221; better than the kinds of aggregate statistics you normally get from a survey report. There are real quotes from free-form survey answers, including a couple of real gems. There&#8217;s a link to download the actual survey report if you&#8217;re into that, too.</p>
<p><small>Dawn Parzych — Catchpoint</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://metastatuspage.com/incidents/z23rb6wx7szf">Statuspage.io</a></li>
<li><a href="https://www.wellandgood.com/good-sweat/mindbody-online-crash-boutique-fitness/">Mindbody Online (fitness studio booking service vendor)</a></li>
<li><a href="https://www.cordcuttersnews.com/sling-tv-has-restored-service-after-overnight-outage/">Sling TV</a></li>
<li><a href="http://www.financialexpress.com/industry/technology/tinder-suffers-outage-after-facebooks-privacy-fixes/1122515/">Tinder</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">The outage seemingly stemmed from privacy fixes Facebook put in place, resulting in a broken OAuth flow.</li>
</ul>
</li>
<li><a href="https://www.computing.co.uk/ctg/news/3029760/microsoft-investigates-causes-of-europe-wide-office-365-outage">Microsoft Office 365</a></li>
<li><a href="https://www.gloucestershirelive.co.uk/news/gloucester-news/thousands-users-across-uk-hit-1428790">Twitter</a></li>
<li><a href="https://timesofindia.indiatimes.com/india/defence-ministry-website-allegedly-hacked-displays-chinese-character/articleshow/63643681.cms">Multiple Indian Government Websites</a></li>
<li><a href="https://coconuts.co/kl/news/days-uber-exits-region-grab-faces-major-service-outage-across-southeast-asia/">Grab</a></li>
<li><a href="https://joltjournal.com/2018/04/02/youtube-channel-pages-are-experiencing-downtime/">YouTube</a></li>
</ul>
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