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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-130/">SRE Weekly Issue #130</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-130/">July 15, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-130/" title="Permalink to SRE Weekly Issue #130" 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: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>SRE is only as important as your customers. Building a culture of reliability with your customers in mind is essential to building robust, user-friendly systems. Learn about the costs of unreliability and why customers care:</p>
<p><a href="http://try.victorops.com/sreweekly/customer-focused-SRE">http://try.victorops.com/sreweekly/customer-focused-SRE</a></p>
</div>
<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://segment.com/blog/goodbye-microservices/" target="_blank">Goodbye Microservices: From 100s of problem children to 1 superstar</a></div>
<div class="sreweekly-description">
<p>Segment discovered the hard way that their move to a microservice architecture had brought far more problems than benefits. Here&#8217;s why they transitioned back and how they pulled it off. Awesome article!</p>
<p><small>Alexandra Noonan — Segment</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.newrelic.com/2018/06/18/reliability-and-resilience/" target="_blank">Establishing Resilience: The Challenges and Opportunities of Complexity</a></div>
<div class="sreweekly-description">
<p>Drawing on the work of Dr. David Woods and the rest of the <a href="https://snafucatchers.com">SNAFU Catchers</a>, this article discusses the concepts behind resiliency and how to measure and achieve it.</p>
<p><small>Beth Long — New Relic</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.networkworld.com/article/3287648/lan-wan/solving-for-serverless-how-do-you-manage-something-that-s-not-there.html" target="_blank">Solving for serverless: How do you manage something that’s not there?</a></div>
<div class="sreweekly-description">
<p>Serverless is not the magical gateway to the land of NoOps. You still have to operate your system even if you&#8217;re not directly running the servers. This article does a great job of explaining why.</p>
<p><small> Bhanu Singh — Network World</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://jvns.ca/blog/2018/06/19/what-i-use-wireshark-for/" target="_blank">How I use Wireshark</a></div>
<div class="sreweekly-description">
<p>New to me: Wireshark&#8217;s statistics view and how it can be useful.</p>
<p><small>Julia Evans</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/observability/health-and-availability-b2f32ce28716" target="_blank">Health and availability in computer systems</a></div>
<div class="sreweekly-description">
<p>How do you define whether your system is available and healthy? This article uses an anology to medical health.</p>
<blockquote><p>Claiming that our system is doing well means nothing if users can perceive an outage.</p></blockquote>
<p><small>José Carlos Chávez — Typeform</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@ptforsberg/on-the-aws-application-load-balancer-http-2-support-fad4bc67b21a" target="_blank">On the AWS Application Load Balancer HTTP/2 Support</a></div>
<div class="sreweekly-description">
<p>These folks are experiencing mysterious latency with HTTP/2 traffic to their ALB and published this report on their investigation. There&#8217;s no happy ending here — ultimately they disabled HTTP/2 support. I hope they update if they do discover the culprit.</p>
<p><small>Peter Forsberg — ShopGun</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://github.com/rsyslog/librelp/issues/13" target="_blank">relp 100% cpu &#8211; rsyslog stop after start · Issue #13 · rsyslog/librelp · GitHub</a></div>
<div class="sreweekly-description">
<p>I had some fun this week unearthing the cause for the chronic lockups in Rsyslog that we&#8217;ve experienced at work. I found the cause (overeager retries of socket writes) and put together a bug report and a pull request.</p>
<p><small><em>Full disclosure: Fastly, my employer, is mentioned.</em></small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.grab.com/building-grab-s-experimentation-platform" target="_blank">Building Grab’s Experimentation Platform</a></div>
<div class="sreweekly-description">
<p>I love science! Grab wrote a nifty tool to help them select cohorts of users and perform experiments on them.</p>
<p><small>Abeesh Thomas and Roman Atachiants — Grab<br />
</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/netflix-techblog/auto-scaling-production-services-on-titus-1f3cd49f5cd7?source=rss----2615bd06b42e---4" target="_blank">Auto Scaling Production Services on Titus – Netflix TechBlog – Medium</a></div>
<div class="sreweekly-description">
<p>Titus is the container orchestration system that Netflix created and open sourced. Rather than building a new auto-scaling feature for Titus, they instead got Amazon to productize EC2&#8217;s auto-scaling engine as a generalized auto-scaling tool, which Netflix then integrated with Titus. Neat!</p>
<p>See Amazon&#8217;s <a href="https://aws.amazon.com/about-aws/whats-new/2018/07/add-scaling-to-services-you-build-on-aws/">Application Auto Scaling announcement</a>, published this past week.</p>
<p><small>Andrew Leung, Amit Joshi, and the rest of the Titus team — Netflix</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.inverse.com/article/46822-gmail-outage-map-shows-massive-blackouts-affecting-new-york-la-and-sf">Gmail</a></li>
<li><a href="https://www.google.com/appsstatus#hl=en&amp;v=issue&amp;sid=5&amp;iid=df974d012febcd7ad8ef758e5ae79327">Google Docs, Sheets, et al.</a></li>
<li><a href="https://twitter.com/YouTubeTV/status/1017121393857556485">YouTube TV</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">During the World Cup match.</li>
</ul>
</li>
<li><a href="https://discord.statuspage.io/incidents/0ddh383sfb1r">Discord</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Discord had a couple of outages this week.</li>
</ul>
</li>
<li><a href="https://mashable.com/2018/07/13/instagram-down-worldwide/">Instagram</a></li>
<li><a href="https://www.pymnts.com/mastercard/2018/outage-declined-credit-card-payments-europe/">Mastercard</a></li>
<li><a href="http://www.dailymail.co.uk/sciencetech/article-5949911/Facebook-Messenger-Popular-messaging-service-goes-offline-users-worldwide.html">Facebook Messenger</a></li>
<li><a href="https://beebom.com/massive-snapchat-outage-hits-uk-and-europe-users-also-complain-about-lost-snapstreaks/">Snapchat</a></li>
<li><a href="https://www.medianama.com/2018/07/223-99-acres-down/">99acres (real estate site)</a></li>
<li><a href="http://feedproxy.google.com/~r/HerokuStatus/~3/L3pKUuqvZd8/1583">Heroku</a></li>
<li><a href="http://www.orlandosentinel.com/business/tourism/os-bz-disney-technology-follow-20180709-story.html">Disney blames 4-hour tech woes on network maintenance</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Here&#8217;s an update on the Disney system outage I linked to last week.
<p><small>Gabrielle Russon — Orlando Sentinel</small></li>
</ul>
</li>
</ul>
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