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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-171/">SRE Weekly Issue #171</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-171/">May 5, 2019</a>
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<a href="https://sreweekly.com/sre-weekly-issue-171/" title="Permalink to SRE Weekly Issue #171" 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, VictorOps:</h2>
<p>[You’re Invited] Puppet, Splunk and VictorOps are teaming up for a live webinar on powering continuous improvement by combining analytics, incident response and automation. Learn best practices for releasing better applications faster, without the fire drills.</p>
<p><a href="http://try.victorops.com/sreweekly/continuous-improvement-webinar">http://try.victorops.com/sreweekly/continuous-improvement-webinar</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.linkedin.com/pulse/reliability-works-aaron-blohowiak/" target="_blank">Reliability That Works</a></div>
<div class="sreweekly-description">
<blockquote><p>TL:DR; Prefer investing in recovery instead of prevention.</p></blockquote>
<p>Make failure a non-event, rather than trying to prevent it. You won&#8217;t succeed in fully preventing failures, and you&#8217;ll instead get out of practice of recovering.</p>
<p><small>Aaron Blohowiak</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://fastjetperformance.com/podcasts/how-i-almost-destroyed-a-50-million-war-plane-when-display-flying-goes-wrong-and-the-normalisation-of-deviance/" target="_blank">How I Almost Destroyed a £50 million War Plane and The Normalisation of Deviance.</a></div>
<div class="sreweekly-description">
<p>They had me at &#8220;normalization of deviance&#8221;. I&#8217;ll read pretty much anything with that in the title.</p>
<p><small> Tim Davies — Fast Jet Performance</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://github.com/monzo/response" target="_blank">Monzo&#8217;s real-time incident response and reporting tool</a></div>
<div class="sreweekly-description">
<p>Monzo&#8217;s system is directly integrated with Slack, helping you manage your incident and track what happens. Check out their <a href="https://www.youtube.com/watch?v=ZqwVlsIonIw">video presentation</a> for more details.</p>
<p><small>Monzo</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://twitter.com/nolancaudill/status/1124532823900082177" target="_blank">Nolan Caudill on Twitter: &#8220;I think postmortem docs are an underused avenue for recruiting engineers.&#8221;</a></div>
<div class="sreweekly-description">
<p>Me too! Great thread.</p>
<p><small>Nolan Caudill and others</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.honeycomb.io/blog/incident-review-caches-are-good-except-when-they-are-bad/" target="_blank">Incident Review: Caches are Good, Except When They Are Bad</a></div>
<div class="sreweekly-description">
<p>I love Honeycomb incident reviews, I really do.</p>
<p><small>Douglas Soo</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://charity.wtf/2019/05/01/friday-deploy-freezes-are-exactly-like-murdering-puppies/" target="_blank">Friday Deploy Freezes Are Exactly Like Murdering Puppies</a></div>
<div class="sreweekly-description">
<p>Born from a Twitter argument thread, this article goes into depth about why Friday change freezes can cause much more trouble than good.</p>
<p><small>Charity Majors</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://status.aws.amazon.com/">Amazon EC2</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Network-related issues in Japan and Hong Kong (on separate days). It&#8217;s starting to become downright impossible to find historical incidents on their mile-long status page.</li>
</ul>
</li>
<li><a href="https://www.google.com/appsstatus#hl=en&amp;v=issue&amp;sid=44&amp;iid=70c8bd72b9dfa3e16aadc1800207e1c0">Google Hangouts Meet</a></li>
<li><a href="https://status.cloud.google.com/incident/developers-console/19003#19003003">Google Cloud Console</a></li>
<li><a href="https://status.slack.com/2019-05/6d7541f932dd628c">Slack</a></li>
<li><a href="https://azure.microsoft.com/en-us/status/history/">Azure, Microsoft 365, and Dynamics 365</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">A DNS change went awry, resulting in one of their DNS zone&#8217;s four nameservers having an empty copy of the zone and serving NXDOMAIN. This is a really interesting incident report to read. Had the nameserver simply not had the zone at all, it would have returned a non-authoritative answer, and clients would have fallen back to one of the other three nameservers.</li>
</ul>
</li>
<li><a href="https://www.newsweek.com/wells-fargo-app-down-not-working-website-mobile-deposit-1414148">Wells Fargo (bank)</a></li>
<li><a href="https://discord.statuspage.io/incidents/kz4ky0cydym1">Discord</a></li>
<li><a href="https://news.alphastreet.com/google-adsense-suffers-massive-global-outage/">Google AdSense</a></li>
<li><a href="https://www.retailnews.asia/subscribers-to-facebook-instagram-and-whatsapp-faced-over-2-hours-downtime/">Facebook, Instagram, and WhatsApp</a></li>
<li><a href="https://www.dailymail.co.uk/news/article-6974701/Angry-customers-slam-Coles-supermarkets-online-shopping-website-goes-two-days.html">Coles (Supermarket chain)</a></li>
<li><a href="https://metro.co.uk/2019/04/29/natwest-lloyds-halifax-internet-banking-apps-9338739/">Hallifax and Lloyds (banks)</a></li>
</ul>
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