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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-145/">SRE Weekly Issue #145</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-145/">October 28, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-145/" title="Permalink to SRE Weekly Issue #145" 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: 80%; color: #909090;">A message from our sponsor, VictorOps:</h2>
<p>When SRE teams track incident management KPIs and benchmarks, they better optimize the way they operate–helping SREs create more resilient teams and build more reliable systems:</p>
<p><a href="http://try.victorops.com/sreweekly/top-incident-management-kpis">http://try.victorops.com/sreweekly/top-incident-management-kpis</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blueskiesmag.com/2018/09/26/to-err-is-human/" target="_blank">To Err Is Human</a></div>
<div class="sreweekly-description">
<p>An article on looking past human error in investigating air sports (<a href="https://en.wikipedia.org/wiki/Air_sports">definition</a>) accidents, drawing on the writing of Don Norman. Special emphasis on slips versus mistakes:</p>
<blockquote><p>“Slips tend to occur more frequently to skilled people than to novices<br />
[&#8230;]</p></blockquote>
<p><small>Mara Schmid — Blue Skies Magazine</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.informationweek.com/strategic-cio/it-strategy/five-ways-to-tackle-digital-transformation-without-downtime/a/d-id/1332895" target="_blank">Five Ways to Tackle Digital Transformation Without Downtime</a></div>
<div class="sreweekly-description">
<p>An VP of NS1 explains how his company rewrote and deployed their core service without downtime.</p>
<p><small>Shannon Weyric — NS1</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.hostedgraphite.com/2018/10/16/status-page-updates-its-all-about-timing/" target="_blank">Status page updates: It’s all about timing</a></div>
<div class="sreweekly-description">
<p>This guide from Hosted Graphite has a ton of great advice and reads almost as if they&#8217;ve released their internal incident response guidelines. Bonus content: check out this <a href="https://status.hostedgraphite.com/incidents/291zstm0dhxn">exemplary post-incident followup</a> from their status site.</p>
<p><small>Fran Garcia — Hosted Graphite</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.atlassian.com/software/jira/ops/handbook" target="_blank">Atlassian Incident Management Handbook</a></div>
<div class="sreweekly-description">
<p>Check it out, Atlassian posted their incident management documentation publicly!</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://charity.wtf/2018/10/24/ten-platform-commandments/" target="_blank">Ten Platform Commandments</a></div>
<div class="sreweekly-description">
<blockquote><p>On Monday I gave a talk at DOES18 called “All the World’s a Platform”, where I talked about a bunch of the lessons learned by using and abusing and running and building platforms at scale.</p>
<p>I promised to do a blog post with the takeaways, so here they are.</p></blockquote>
<p><small>Charity Majors</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.bugsnag.com/application-stability-monitoring/" target="_blank">Not All Bugs Are Worth Fixing (And That&#8217;s Okay)</a></div>
<div class="sreweekly-description">
<blockquote><p>[&#8230;] at a certain point, it’s too expensive to keep fixing bugs because of the high-opportunity cost of building new features. You need to decide your target for stability just like you would availability, and it should not be 100%.</p></blockquote>
<p><small>Kristine Pinedo — Bugsnag</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.acolyer.org/2018/10/24/maelstrom-mitigating-datacenter-level-disasters-by-draining-interdependent-traffic-safely-and-efficiently/" target="_blank">Maelstrom: mitigating datacenter-level disasters by draining interdependent traffic safely and efficiently</a></div>
<div class="sreweekly-description">
<p>Maelstrom is Facebook&#8217;s tool to assist engineers in safely moving traffic off of impaired infrastructure.</p>
<p><small>Adrian Colyer — The Morning Paper (summary)</small><br />
<small>Veeraraghavan et al. — Facebook (original paper)</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.safetydifferently.com/failure-differently/" target="_blank">Failure differently</a></div>
<div class="sreweekly-description">
<p>Attempting to stamp out failure entirely can have the paradoxical effect of reducing resiliency to anomalous situations. Instead, we need to handle failure constructively.</p>
<p><small>Daniel Hummerdal — Safety Differently</small></p>
</div>
</div>
<p>v</p>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.honeycomb.io/blog/postmortem-rds-clogs-cache-refresh-crash-loops/">Postmortem: RDS Clogs &amp; Cache-Refresh Crash Loops &#8211; Honeycomb</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">
<p>I guess it&#8217;s probably mean of me, but I always get excited when Honeycomb has an outage, because I love reading their followup analyses. This one expertly deconstructs a messy incident with lots of contributing factors.</p>
<p><small>Rachel Fong — Honeycomb</small></p>
</li>
</ul>
</li>
<li><a href="https://blog.github.com/2018-10-21-october21-incident-report/">GitHub</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">GitHub had a severe outage this week. Their brief summary (linked above) brings to mind the mention of the risk of data center isolation in this article from July:
<ul>
<li><a href="https://www.infoq.com/news/2018/07/github-mysql-high-availability">GitHub Engineering Adopts New Architecture for MySQL High Availability</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="https://www.traviscistatus.com/incidents/z5qn5d4q1nzq">Travis CI</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Caused by the GitHub outage.</li>
</ul>
</li>
<li><a href="https://status.fastly.com/incidents/zj8phqj1sz52">Fastly</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Fastly had a rough week:
<ul>
<li><a href="https://status.fastly.com/incidents/zj8phqj1sz52">Degraded Performance in South Africa</a></li>
<li><a href="https://status.fastly.com/incidents/1qm4jcw78dg3">Elevated Errors in DCA/Ashburn</a></li>
<li><a href="https://status.fastly.com/incidents/2gd9mgs2rwnc">CDN Degraded Shield Performance</a></li>
<li><a href="https://status.fastly.com/incidents/lwjvbzf5n6f4">Elevated Errors in GIG/Rio de Janeiro</a></li>
<li><a href="https://status.fastly.com/incidents/z5rqm4w19rl4">Elevated Errors in HHN/Frankfurt</a><small><em>Full disclosure: Fastly is my employer.</em></small></li>
</ul>
</li>
</ul>
</li>
<li><a href="https://status.pagerduty.com/incidents/pvkbrkdf7877">PagerDuty</a></li>
<li><a href="https://www.express.co.uk/life-style/science-technology/1036707/YouTube-down-video-streaming-site-not-working-playback-error-message-displayed">YouTube</a></li>
<li><a href="http://feedproxy.google.com/~r/HerokuStatus/~3/VJDSXnBZVxk/1651">Heroku</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Also <a href="https://status.heroku.com/incidents/1649">this one</a> and a few other minor ones.</li>
</ul>
</li>
<li><a href="https://www.newsweek.com/snapchat-down-not-working-outage-could-not-refresh-1189519">Snapchat</a></li>
<li><a href="https://status.bitbucket.org/incidents/xr5y9ckb6sls">BitBucket</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">The above is a total outage for one hour. They also had a <a href="https://status.bitbucket.org/incidents/s4pdw7kb6wf5">less severe incident</a> the previous day.</li>
</ul>
</li>
<li><a href="https://www.dailystar.co.uk/news/latest-news/738357/reddit-down-not-working-down-detector-social-media-twitter-facebook-instagram">Reddit</a></li>
<li><a href="https://www.digitaltrends.com/mobile/apples-icloud-is-experiencing-issues-across-multiple-service/">iCloud</a></li>
</ul>
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