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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-303/">SRE Weekly Issue #303</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-303/">January 2, 2022</a>
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<a href="https://sreweekly.com/sre-weekly-issue-303/" title="Permalink to SRE Weekly Issue #303" 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, <a href="https://rootly.com/demo/?utm_source=sreweekly">Rootly</a>:</h2>
<p>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:<br /><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>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.jeli.io/hot-takes-on-code-freezes/" target="_blank" rel="noopener">Hot Takes on Code Freezes</a></div>
<div class="sreweekly-description">
<blockquote>
<p>There are way too many gorgeous, mind-blowing ways for incidents to occur without a single change to code being deployed.</p>
</blockquote>
<p>That last hot take is the kicker: even if you don&#8217;t do a code freeze in December (in the US), you&#8217;ll still see a lot of the same pitfalls as you would have if you did.</p>
<p>  <small>Emily Ruppe — Jeli</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@SkyscannerEng/how-a-couple-of-characters-brought-down-our-site-356ccaf1fbc3" target="_blank" rel="noopener">How a couple of characters brought down our site</a></div>
<div class="sreweekly-description">
<p>Ah, IaC, the tool we use to machine-gun our feet in a highly-available manner at scale. This analysis of an incident from back in August tells what happened and what they learned.</p>
<p>  <small>Stuart Davidson — Skyscanner</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@bruce_25864/the-road-to-sre-ad4c73df78b8" target="_blank" rel="noopener">The ROAD to SRE</a></div>
<div class="sreweekly-description">
<blockquote>
<p>By establishing a set of core principles (Response, Observability, Availability and Delivery) aka our “ROAD to SRE”, we now have clarity on what areas we expect our SRE team should be focusing on and avoiding a common pitfall of becoming another platform or Ops team.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Bruce Dominguez</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://thenewstack.io/building-sre-teams-with-specialization/" target="_blank" rel="noopener">Building SRE Teams with Specialization</a></div>
<div class="sreweekly-description">
<blockquote>
<p>In this blog post, we’ll look at:</p>
<ul>
<li>The advantages of an SRE team where each member is a specialist.</li>
<li>Some SRE specialist roles and how they help.</li>
</ul>
</blockquote>
<p>&nbsp;&nbsp;<small>Emily Arnott — The New Stack</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.blameless.com/sre/sre-predictions-2022" target="_blank" rel="noopener">SRE Predictions 2022</a></div>
<div class="sreweekly-description">
<p>I love these &#8220;predictions for $YEAR&#8221; posts. What are your predictions?</p>
<p>&nbsp;&nbsp;<small>Emily Arnott — Blameless</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://sysadvent.blogspot.com/2021/12/day-20-to-deploy-or-not-to-deploy-that.html" target="_blank" rel="noopener">Day 20 &#8211; To Deploy or Not to Deploy? That is the question.</a></div>
<div class="sreweekly-description">
<blockquote>
<p>Deployment Decision-Making during the holidays amid the COVID19 Pandemic</p>
<p><em>A sneak peek into my forthcoming MSc. thesis in Human Factors and Systems Safety, Lund University.</em></p>
</blockquote>
<p>&nbsp;&nbsp;<small>Jessica DeVita (edited by Jennifer Davis) — SysAdvent</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://sysadvent.blogspot.com/2021/12/day-22-so-youre-incident-commander-now.html" target="_blank" rel="noopener">Day 22 &#8211; So, You&#8217;re Incident Commander, Now What?</a></div>
<div class="sreweekly-description">
<p>This article covers what to do as an incident commander, how to handle long-running incidents, and how to do a post-incident review.</p>
<p>&nbsp;&nbsp;<small>Joshua Timberman — SysAdvent</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://ferd.ca/plato-s-dashboards.html" target="_blank" rel="noopener">Plato&#8217;s Dashboards</a></div>
<div class="sreweekly-description">
<blockquote>
<p>So in this post I&#8217;m going to go over what makes a good metric, why data aggregation on its own loses resolution and messy details that are often critical to improvements, and that good uses of metrics are visible by their ability to assist changes and adjustments.</p>
</blockquote>
<p>&nbsp;&nbsp;<small>Fred Hebert</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://sysadvent.blogspot.com/2021/12/day-23-what-is-ebpf.html" target="_blank" rel="noopener">Day 23 &#8211; What is eBPF?</a></div>
<div class="sreweekly-description">
<p>Here&#8217;s a great tutorial to get started with eBPF through a (somewhat convoluted) &#8220;Hello World&#8221; exercise.</p>
<p>&nbsp;&nbsp;<small>Ania Kapuścińska (edited by Shaun Mouton) — SysAdvent</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2021/12/28/the-ambiguity-of-real-work/" target="_blank" rel="noopener">The ambiguity of real work</a></div>
<div class="sreweekly-description">
<p>The concept of engineering work being about resolving ambiguity really resonates with me.</p>
<p>&nbsp;&nbsp;<small>Lorin Hochstein</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rachelbythebay.com/w/2022/01/01/baddate/" target="_blank" rel="noopener">YYMMDDHHMM just overflowed a signed 32 bit int</a></div>
<div class="sreweekly-description">
<p>This appears to have caused a problem with Microsoft Exchange servers. Maybe this belongs in the Outages section&#8230;</p>
<p>&nbsp;&nbsp;<small>rachelbythebay</small></p>
</div>
</div>
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<h2 class="wp-block-heading">Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.marca.com/en/lifestyle/us-news/2021/12/28/61cb41c222601d2e4a8b4596.html">Walgreens pharmacy Covid-19 testing scheduler</a>
</li><li><a href="https://www.express.co.uk/finance/personalfinance/1543066/nationwide-building-society-payment-issues-outage-UK-2021">Nationwide Bank</a>
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