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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-301/">SRE Weekly Issue #301</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-301/">December 19, 2021</a>
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<a href="https://sreweekly.com/sre-weekly-issue-301/" title="Permalink to SRE Weekly Issue #301" 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, <a href="https://rootly.com/demo/?utm_source=sreweekly">Rootly</a>:</h2>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Manage incidents directly from Slack with Rootly 🚒. Automate manual admin tasks like creating incident channel, Jira and Zoom, paging the right team, postmortem timeline, setting up reminders, and more. Book a demo:&quot;}" data-sheets-userformat="{&quot;2&quot;:897,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:0,&quot;11&quot;:4,&quot;12&quot;:0}">Manage incidents directly from Slack with Rootly 🚒. Automate manual admin tasks like creating incident channel, Jira and Zoom, paging the right team, postmortem timeline, setting up reminders, and more. Book a demo:</span></p>
<p><a href="https://rootly.com/demo/?utm_source=sreweekly">https://rootly.com/demo/?utm_source=sreweekly</a></p>
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<h2 class="wp-block-heading">Articles</h2>
<div class="wp-block-group"><div class="wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow">
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://badger.com/technical-post-mortem" target="_blank" rel="noopener">BadgerDAO Exploit Technical Post Mortem </a></div>
<div class="sreweekly-description">
<p>This one perhaps belongs in a security newsletter, but the failure mode is just so fascinating. A CDN bug led to the loss of millions of dollars worth of Bitcoin.</p>
<p>&nbsp;&nbsp;<small>Badger</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.google.com/appsstatus/dashboard/incidents/zURR7mGQjom4ktGZcR5A" target="_blank" rel="noopener">Google Calendar Incident Report for December 8th Outage</a></div>
<div class="sreweekly-description">
<p>Google posted a report for the Google Calendar outage last week.</p>
<p>&nbsp;&nbsp;<small>Google</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.jeli.io/how-we-got-here-incident-report-slow-failed-loading-investigations/" target="_blank" rel="noopener">How We Got Here: Incident Report September 2021—Slow / Failed Loading Investigations</a></div>
<div class="sreweekly-description">
<p>Jeli, authors of the <a href="https://www.jeli.io/howie-the-post-incident-guide/">Howie post-incident guide</a> has their own &#8220;howie&#8221;. It&#8217;s a great example of a thorough incident report.</p>
<p>&nbsp;&nbsp;<small>Vanessa Huerta Granda — Jeli</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rootly.com/blog/a-site-reliability-engineer-s-guide-to-the-holiday-season?utm_source=reddit&amp;utm_medium=blog" target="_blank" rel="noopener">A Site Reliability Engineer’s Guide to the Holiday Season</a></div>
<div class="sreweekly-description">
<p>Hopefully not too late, here are some tips as we head into the thick of it.</p>
<p>&nbsp;&nbsp;<small>JJ Tang — Rootly</small><br>
<small><em>This article is published by my sponsor, Rootly, but their sponsorship did not influence its inclusion in this issue.</em></small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.blameless.com/incident-response/how-to-write-meaningful-retrospectives" target="_blank" rel="noopener">How to Write Meaningful Retrospectives</a></div>
<div class="sreweekly-description">
<p>Using their own <a href="https://www.blameless.com/incident-response/incident-retrospective-postmortem-template">incident retrospective template</a>, Blameless shows us how to write an incident retrospective.</p>
<p>&nbsp;&nbsp;<small>Emily Arnott — Blameless</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.fb.com/2021/12/13/production-engineering/slick/" target="_blank" rel="noopener">SLICK: Adopting SLOs for improved reliability</a></div>
<div class="sreweekly-description">
<p>Meta has their own in-house-built tool for tracking and reporting on SLIs.</p>
<p>&nbsp;&nbsp;<small>A Posten, Dávid Bartók, Filip Klepo, and Vatika Harlalka — Meta</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://incident.io/blog/on-call-at-incident-io" target="_blank" rel="noopener">On-call by default</a></div>
<div class="sreweekly-description">
<p>These folks put everyone on-call by default, and also pay them extra automatically for each shift and even covering for coworkers.</p>
<p>&nbsp;&nbsp;<small>Chris Evans — incident.io</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.honeycomb.io/blog/incident-report-missing-trigger-notification-emails/" target="_blank" rel="noopener">Incident Report: The Missing Trigger Notification Emails</a></div>
<div class="sreweekly-description">
<p>Code that was deployed under a feature flag inadvertently affected all traffic, even with the flag disabled.</p>
<p>&nbsp;&nbsp;<small>Steve Lewis — Honeycomb</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/lightstephq/what-made-slos-so-messy-and-what-we-can-do-about-it-89be415a80b3" target="_blank" rel="noopener">What made SLOs so messy (and what we can do about it)</a></div>
<div class="sreweekly-description">
<p>By creating SLOs for microservices at various levels of the request tree, they ended up with a morass of arbitrary targets that didn&#8217;t relate clearly to the user experience.</p>
<p>&nbsp;&nbsp;<small>Ben Sigelman — Lightstep</small></p>
</div>
</div>
</div></div>
<h2 class="wp-block-heading">Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://status.aws.amazon.com/">AWS us-west-1 and us-west-2</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">
<p>Hot on the heels of last week&#8217;s us-east-1 outage, AWS had a shorter outage in us-west-1 and us-west-2.</p>
</li>
</ul>
</li>
<li><a href="https://status.pagerduty.com/incidents/vbp7ht2647l8">PagerDuty</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">
<p>PagerDuty alert notifications were affected by the AWS us-west-2 outage, and the impact lasted about twice as long as AWS&#8217;s.</p>
</li>
</ul>
</li>
<li><a href="https://status.slack.com/2021-12-16">Slack</a></li>
<li><a href="https://www.cloudflarestatus.com/incidents/qz5m74q8q0jl">Cloudflare</a></li>
<li><a href="https://cryptobriefing.com/solana-experiencing-issues-again/">Solana</a></li>
</ul>
</div>
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