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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-256/">SRE Weekly Issue #256</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-256/">February 7, 2021</a>
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<a href="https://sreweekly.com/sre-weekly-issue-256/" title="Permalink to SRE Weekly Issue #256" class="email_only">View on sreweekly.com</a>
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<h2 style="text-align: center; font-size: 80%; color: #909090;">A message from our sponsor, StackHawk:</h2>
<p>Register now for the first-ever ZAPCon taking place March 9th. The free event will focus on OWASP ZAP and application security best practices. You wont want to miss it!<br />
<a href="http://sthwk.com/zapcon-sre-weekly">http://sthwk.com/zapcon-sre-weekly</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://slack.engineering/slacks-outage-on-january-4th-2021/" target="_blank">Slack’s Outage on January 4th 2021</a></div>
<div class="sreweekly-description">
<p>Here&#8217;s a blog post from Slack giving even more information about what went wrong on January 4. Bravo, Slack, there&#8217;s a lot in here for us to learn from.</p>
<p><small>Laura Nolan — Slack</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://research.fb.com/publications/zero-downtime-release-disruption-free-load-balancing-of-a-multi-billion-user-website/" target="_blank">Zero Downtime Release: Disruption-free Load Balancing of a Multi-Billion User Website</a></div>
<div class="sreweekly-description">
<p>This academic paper from Facebook explains how they release code without disrupting active connections, even for a small number of users.</p>
<p><small>Usama Naseer, Luca Niccolini, Udip Pant, Alan Frindell, Ranjeeth Dasineni, and Theophilus A. Benson — Facebook</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://billduncan.org/notam-for-sres/" target="_blank">NOTAM for SREs</a></div>
<div class="sreweekly-description">
<p>Another lesson we can learn from aviation: have one place where engineers can find out about temporary infrastructure changes that are important.</p>
<p><small>Bill Duncan</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.coinbase.com/incident-post-mortem-january-29-2021-5ab5247e43da" target="_blank">Incident Post Mortem: January 29, 2021 [Coinbase]</a></div>
<div class="sreweekly-description">
<p>Coinbase posted this detailed analysis of their January 29th incident.</p>
<p><small>Coinbase</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.forbes.com/sites/forbestechcouncil/2021/02/04/how-cloud-services-platform-teams-can-drive-the-adoption-of-effective-sre-practices/" target="_blank">Council Post: How Cloud Services Platform Teams Can Drive The Adoption Of Effective SRE Practices</a></div>
<div class="sreweekly-description">
<p>Interesting thesis: a company moving into the cloud is in a unique position to adopt SRE practices — and better situated than cloud-first companies.</p>
<p><small>Tina Huang (CTO, Transposit) — Forbes</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.blameless.com/blog/im-just-doing-my-job-an-sre-myth" target="_blank">&#8220;I&#8217;m Just Doing my Job,&#8221; An SRE Myth</a></div>
<div class="sreweekly-description">
<p>We need to push past surface-level mitigation of an incident and really dig in and learn.</p>
<p><small>Darrell Pappa — Blameless</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://github.blog/2021-02-02-github-availability-report-january-2021/" target="_blank">GitHub Availability Report: January 2021</a></div>
<div class="sreweekly-description">
<p>GitHub&#8217;s database failed in a manner that wasn&#8217;t detected by their automated failover system.</p>
<p><small>Keith Ballinger — GitHub</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.linkedin.com/blog/2021/open-source-update--school-of-sre" target="_blank">Open source update: School of SRE</a></div>
<div class="sreweekly-description">
<p>LinkedIn published their SRE training documentation in the form of a full curriculum covering a range of topics.</p>
<p><small>Akbar KM and Kalyanasundaram Somasundaram — LinkedIn</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rachelbythebay.com/w/2021/02/03/bits/" target="_blank">Push some big numbers through your system and look for bugs</a></div>
<div class="sreweekly-description">
<p>Your code may be designed to handle 64-bit integers, but what if a library (such as a JSON decoder) converts them to floating point numbers?</p>
<p><small>rachelbythebay</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://finance.yahoo.com/news/apple-icloud-outage-201939429.html">Apple iCloud</a></li>
<li><a href="https://www.bleepingcomputer.com/news/security/spamcop-anti-spam-service-suffers-an-outage-after-its-domain-expired/">SpamCop</a></li>
<li><a href="https://www.androidpolice.com/2021/02/01/wink-has-been-down-for-a-week-and-counting/">Wink</a></li>
<li><a href="https://www.polygon.com/streaming/2021/2/2/22219391/twitch-down-feb-2-2021-investigating-problems">Twitch</a></li>
<li><a href="https://www.techtimes.com/articles/256753/20210205/disney-down-error-code-83-401-server-outage-persists-viral.htm">Disney+</a></li>
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