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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-200/">SRE Weekly Issue #200</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-200/">December 29, 2019</a>
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<a href="https://sreweekly.com/sre-weekly-issue-200/" title="Permalink to SRE Weekly Issue #200" 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>Learn how to modernize your approach to incident management and slash MTTA/MTTR in the latest webinar from VictorOps + Splunk:</p>
<p><a href="https://go.victorops.com/sreweekly-modernized-incident-management">https://go.victorops.com/sreweekly-modernized-incident-management</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://lorinhochstein.wordpress.com/2019/07/04/why-incidents-cant-be-monocausal/" target="_blank">Why incidents can’t be monocausal</a></div>
<div class="sreweekly-description">
<p>The logical argument goes like this: if incidents in your system each had a single root cause, that implies a level of brittleness that would preclude your company running successfully at all.</p>
<p><small>Lorin Hochstein</small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://lorinhochstein.wordpress.com/2017/06/24/a-conjecture-on-why-reliable-systems-fail/" target="_blank">A conjecture on why reliable systems fail</a></div>
<div class="sreweekly-description">
<blockquote><p>Once a system reaches a certain level of reliability, most major incidents will involve:</p>
<ul>
<li>A manual intervention that was intended to mitigate a minor incident, or</li>
<li>Unexpected behavior of a subsystem whose primary purpose was to improve reliability</li>
</ul>
</blockquote>
<p><small>Lorin Hochstein</small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://resilienceroundup.com/issues/61/" target="_blank">When mental models go wrong. Co-occurrences in dynamic, critical systems</a></div>
<div class="sreweekly-description">
<p>Confirmation bias can lead us to reinforce an incorrect mental model through spurious correlations.</p>
<p><small>Thai Wood — Resilience Roundup (summary)</small><br />
<small>Dennis Bernard, David Greathead, and Gordon Baxter — International Journal of Human Computer Studies (original paper)</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.sensu.io/reducing-alert-fatigue-with-goalert" target="_blank">Reducing alert fatigue with GoAlert, Target’s on-call scheduling and notification platform</a></div>
<div class="sreweekly-description">
<blockquote><p>In this post, I’ll recap his talk, sharing the journey that led them to build GoAlert, the problems they’ve solved, and how they use GoAlert with Sensu Go to simplify monitoring and reduce alert fatigue.</p></blockquote>
<p><small>Anna MacLachlan — Sensu (recap)</small><br />
<small>Adam Westman — Target (talk)</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://tersesystems.com/blog/2019/07/22/targeted-diagnostic-logging-in-production/" target="_blank">Targeted Diagnostic Logging in Production</a></div>
<div class="sreweekly-description">
<p>Verbose debug logging + feature flagging = a way to investigate unknown unknowns in your system.</p>
<p><small>Will Sargent</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.cincinnati.com/story/news/2019/12/24/kroger-credit-card-machines/2743140001/">Kroger (store)</a></li>
<li><a href="https://boston.cbslocal.com/2019/12/23/mbta-network-outage-clocks-predictions-online/">MBTA (Boston, MA, US transit system)</a></li>
<li><a href="https://www.express.co.uk/life-style/science-technology/1221193/Amazon-Echo-down-Alexa-outage-connection-error">Amazon Echo</a></li>
<li><a href="https://www.freightwaves.com/news/malware-hits-truckstop-com-sites-services-shut-days-before-christmas">Truckstop.com</a></li>
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