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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-230/">SRE Weekly Issue #230</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-230/">August 2, 2020</a>
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<a href="https://sreweekly.com/sre-weekly-issue-230/" title="Permalink to SRE Weekly Issue #230" class="email_only">View on sreweekly.com</a>
<p>Happy BTW: Wear a mask.</p>
<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, StackHawk:</h2>
<p>Add security testing to your CI pipelines with GitHub Actions. Check out this webinar recording (no email required) to learn how.<br />
<a href="https://www.youtube.com/watch?v=W_7BxFgMYHs&amp;time_continue=8">https://www.youtube.com/watch?v=W_7BxFgMYHs&amp;time_continue=8</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://launchdarkly.com/blog/launchdarklys-evolution-from-polling-to-streaming/" target="_blank">LaunchDarkly’s Evolution from Polling to Streaming</a></div>
<div class="sreweekly-description">
<p>LaunchDarkly started off with a polling-based architecture and ultimately migrated to pushing deltas out to clients.</p>
<p><small>Dawn Parzych — LaunchDarkly</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.zebrium.com/blog/virtual-tracing-a-simpler-alternative-to-distributed-tracing-for-troubleshooting" target="_blank">A simpler alternative to distributed tracing for troubleshooting</a></div>
<div class="sreweekly-description">
<p>A brief overview of some problems with distributed tracing, along with a suggestion of another way involving AI.</p>
<p><small>Larry Lancaster — Zebrium</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://static.googleusercontent.com/media/www.google.com/en//appsstatus/ir/u5sinmib27yly4i.pdf" target="_blank">Google Cloud Issue Summary Classroom &#8211; 2020-07-07</a></div>
<div class="sreweekly-description">
<p>This is Google&#8217;s post-incident report for their Google Classroom incident on July 7.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://eng.uber.com/microservice-architecture/" target="_blank">Introducing Domain-Oriented Microservice Architecture</a></div>
<div class="sreweekly-description">
<p>Uber has long been a champion of microservices. Now, with several years of experience, they share the lessons they&#8217;ve learned and how they deal with some of the pitfalls.</p>
<p><small>Adam Gluck — <a href="https://www.proactiveinvestors.co.uk/companies/news/203400/a-short-history-of-ubers-controversies-203400.html">Uber</a></small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.pagerduty.com/blog/remote-incident-response/" target="_blank">Keeping PagerDuty Always On With Remote Incident Response</a></div>
<div class="sreweekly-description">
<p>This article opens with an interesting description of what the Cloudflare outage looked like from PagerDuty&#8217;s perspective.</p>
<p><small>Dave Bresci — PagerDuty</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2020/07/28/safe-by-design/" target="_blank">Safe by design?</a></div>
<div class="sreweekly-description">
<p>This post reflects on two distinct philosophies of safety:</p>
<blockquote><p>the engineering design should ensure that the system is safe</p>
<p>design alone cannot ensure that the system is safe</p></blockquote>
<p><small>Lorin Hochstein</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://surfingcomplexity.blog/2020/07/28/all-we-can-do-is-find-problems/" target="_blank">All we can do is find problems</a></div>
<div class="sreweekly-description">
<blockquote><p>You can’t use availability metrics to inform you about whether your system is reliable enough, because they can only tell you if you have a problem.</p></blockquote>
<p><small>Lorin Hochstein</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://metro.co.uk/2020/07/28/facebook-instagram-whatsapp-13048914/">Facebook, Instagram and WhatsApp</a></li>
<li><a href="https://status.fastly.com/incidents/0w1sfry6gbq8">Fastly</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Also two PoP-specific incidents:
<ul>
<li><a href="https://status.fastly.com/incidents/n49pq97ppmft">BOG</a></li>
<li><a href="https://status.fastly.com/incidents/z5xkwps2qb8b">JNB</a></li>
</ul>
<p><small><em>Full disclosure: Fastly is my employer.</em></small></li>
</ul>
</li>
<li><a href="https://status.heroku.com/incidents/2090">Heroku</a></li>
</ul>
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