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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-112/">SRE Weekly Issue #112</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-112/">March 4, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-112/" title="Permalink to SRE Weekly Issue #112" class="email_only">View on sreweekly.com</a>
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<h2 style="text-align: center; font-size: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>Are your monitoring and incident management tools integrated? You shouldn&#8217;t be monitoring your infrastructure and code in an old-school fashion. <a href="http://try.victorops.com/SREWeekly/Monitoring">http://try.victorops.com/SREWeekly/Monitoring</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.hostedgraphite.com/2018/03/01/spooky-action-at-a-distance-how-an-aws-outage-ate-our-load-balancer/" target="_blank">Spooky action at a distance, how an AWS outage ate our load balancer</a></div>
<div class="sreweekly-description">
<blockquote><p>an outage of a provider that we don’t use, directly or indirectly, resulted in our service becoming unavailable.</p></blockquote>
<p>I don&#8217;t think I even need to add anything to that to make you want to read this article.</p>
<p><small>Fran Garcia — Hosted Graphite</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://githubengineering.com/ddos-incident-report/" target="_blank">GitHub&#8217;s report on the Memcached-based DDoS</a></div>
<div class="sreweekly-description">
<p>The big story this week is the memcached UDP amplification DDoS method, used to send 1.3 Tbps (!) toward our friends at GitHub. Their description is linked above.</p>
<p><small>Sam Kottler — GitHub<br />
</small></p>
<p>The internet was alight with related discussions:</p>
<ul>
<li><a href="https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/">Cloudflare&#8217;s description of the attack</a></li>
<li><a href="https://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.html">Akamai&#8217;s story about helping GitHub survive the attack</a></li>
<li>memcached developer <a href="https://twitter.com/dormando/status/968570723521277953">announces</a> release that disables UDP by default</li>
<li>with <a href="https://twitter.com/dormando/status/968540354692636672">commentary</a></li>
<li>Charity Majors also had some <a href="https://twitter.com/mipsytipsy/status/969443770532900866">amusing commentary</a></li>
<li><a href="https://www.wired.com/story/github-ddos-memcached/">Wired&#8217;s story on the GitHub attack</a></li>
</ul>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://github.com/CaitieM20/Talks/blob/master/TacklingAlertFatigue/runbook.md" target="_blank">Runbook Template</a></div>
<div class="sreweekly-description">
<p>An excellent template that you can use as a basis for writing runbooks.</p>
<p><small>Catie McCaffrey</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://lemurbook.com/devops-and-sre-contribution/" target="_blank">DevOps and SRE Contribution – The Lemur Book</a></div>
<div class="sreweekly-description">
<p>This author of an upcoming O&#8217;Reilly book is looking for small contributions for a crowd-sourced chapter:</p>
<blockquote><p><em>In two paragraphs or less</em>, what do you think is the relationship between DevOps and SRE? How are they similar? How are they different? Can both be implemented at every organization? Can the two exist in the same org at the same time? And so on&#8230;</p></blockquote>
<p><small>David Blank-Edelman</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blogs.dropbox.com/tech/2018/03/meet-bandaid-the-dropbox-service-proxy/" target="_blank">Meet Bandaid, the Dropbox service proxy</a></div>
<div class="sreweekly-description">
<blockquote><p>Bandaid started as a reverse proxy that compensated for inefficiencies in our server-side services.</p></blockquote>
<p>I&#8217;m intrigued by the way it handles its queue in last-in first-out order, on the theory that a request that&#8217;s been waiting for a long time is likely to be cancelled by its requester.</p>
<p><small>Dmitry Kopytkov and Patrick Lee — Dropbox</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.itproportal.com/features/5-of-the-worlds-biggest-network-outages/" target="_blank">5 of the world’s biggest network outages</a></div>
<div class="sreweekly-description">
<p>This is an amusing recap of five major outages of the past few years. If you&#8217;ve been subscribed for awhile, it&#8217;ll be review, but I still enjoyed the reminder.</p>
<p><small>Michael Rabinowitz</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.zdnet.com/article/how-clouds-fail-slow/" target="_blank">Fail-slow at scale: When the cloud stops working</a></div>
<div class="sreweekly-description">
<p>This article summarizes a new research paper on &#8220;fail-slow&#8221; hardware failures. When hardware only <em>kind of</em> fails, it can often have more disastrous consequences than when it stops working outright.</p>
<p><small> Robin Harris — Storage Bits</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.youtube.com/watch?v=dabnx8VSdkE&amp;feature=youtu.be" target="_blank">Launching An Entire Fireworks Display At Once</a></div>
<div class="sreweekly-description">
<p>This is an awe-inspiring way to make a point about designing systems to be resilient to human error.</p>
<blockquote><p>If it&#8217;s possible for a human to hit the wrong button and set off an entire fireworks display by accident, then maybe the problem isn&#8217;t with the human; it&#8217;s with that button.</p>
<p>If it&#8217;s possible to mix up minutes and fractions of a second like we&#8217;ve done deliberately, then maybe the system isn&#8217;t clear, or maybe the pre-launch checklist isn&#8217;t thorough enough.</p></blockquote>
<p><small>Tom Scott</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.split.io/blog/managing-feature-flag-debt-split/" target="_blank">Managing Feature Flag Debt with Split</a></div>
<div class="sreweekly-description">
<p>There are some really great ideas in this article around preventing and ameliorating the technical debt that can be inherent in the use of feature flags. Ostensibly this article is about using Split.io, but the ideas are broadly applicable.</p>
<p><small>Adil Aijaz — Split</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://status.slack.com/2018-03/07e49841fd4c74f8">Slack</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Possibly due to the AWS outage.<small><em>Thanks to marc on <a href="http://signup.hangops.com">hangops</a> #incident_response for this one.</em></small></li>
</ul>
</li>
<li><a href="https://www.geekwire.com/2018/widespread-outage-amazon-web-services-u-s-east-region-takes-alexa-atlassian-developer-tools/">AWS us-east-1</a></li>
<li><a href="https://metastatuspage.com/incidents/6fbn11c94j3n">Statuspage.io</a></li>
<li><a href="https://tamebay.com/2018/03/abebooks-experienced-another-outage-this-week.html">Abebooks</a></li>
<li><a href="http://www.newsweek.com/linkedin-down-not-working-why-site-login-826916">LinkedIn</a></li>
<li><a href="https://www.express.co.uk/life-style/science-technology/926377/AOL-down-not-working-e-mail-AOL-Mail">AOL Email</a></li>
<li><a href="https://www.inverse.com/article/41672-vero-down-increased-demand-new-users">Vero (social network)</a></li>
<li><a href="https://themerkle.com/coinsmarkets-exchange-resumes-withdrawals-after-major-outage/">CoinsMarkets (cryptocurrency exchange)</a></li>
</ul>
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