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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-141/">SRE Weekly Issue #141</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-141/">September 30, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-141/" title="Permalink to SRE Weekly Issue #141" 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 you exploring serverless architecture on AWS? Check out this post to get step-by-step instructions for setting up and maintaining DynamoDB to keep it from waking you up with unactionable alerts:</p>
<p><a href="http://try.victorops.com/sreweekly/dynamodb-and-aws">http://try.victorops.com/sreweekly/dynamodb-and-aws</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/netflix-techblog/netflix-edge-load-balancing-695308b5548c?source=rss----2615bd06b42e---4" target="_blank">Rethinking Netflix’s Edge Load Balancing</a></div>
<div class="sreweekly-description">
<p>An outline of the design of Netflix&#8217;s new load balancer, with special emphasis on dealing with faltering backends. Great idea: servers report their utilization level in a response header. Tricky pitfall: the LB is so good at moving requests off of ailing backends that backend failure rate alerts don&#8217;t fire.</p>
<p><small>Mike Smith — Netflix</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://dbmsmusings.blogspot.com/2018/09/newsql-database-systems-are-failing-to.html" target="_blank">NewSQL database systems are failing to guarantee consistency, and I blame Spanner</a></div>
<div class="sreweekly-description">
<p>This article begins by explaining consistency versus availability in distributed data stores and argues that the trade-off is less significant than one might think. Then it describes a pitfall seen in some new data stores. I&#8217;ve pondered aloud here in the past on how Spanner can make the claims it does, and this article explains that nicely.</p>
<p><small>Daniel Abadi</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://ayende.com/blog/184545-A/the-redux-of-the-fallacies-of-distributed-computing?Key=ca5e02d1-378a-4189-b231-85b509071c44" target="_blank">The redux of the fallacies of distributed computing</a></div>
<div class="sreweekly-description">
<p>And here&#8217;s a refutation of part of the previous article by the creator of RavenDB.</p>
<p><small>Ayende Rahien</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.informationsecuritybuzz.com/articles/getting-the-airlines-back-on-their-feet-after-a-disaster/" target="_blank">Getting The Airlines Back On Their Feet After A Disaster</a></div>
<div class="sreweekly-description">
<blockquote><p>It is tempting to think that ensuring the resilience or continuity of all the individual parts of a business will guarantee the resilience or continuity of the whole.</p></blockquote>
<p><small>Dr. Sandra Bell</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://githubengineering.com/upgrading-github-from-rails-3-2-to-5-2/" target="_blank">Upgrading GitHub from Rails 3.2 to 5.2</a></div>
<div class="sreweekly-description">
<p>GitHub used an innovative technique to avoid holding open a long-running code branch while upgrading their application to support rails 5.2.</p>
<p><small>Eileen Uchitelle — GitHub</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://blog.travis-ci.com/2018-09-27-gce-worker-postmortem" target="_blank">Travis CI: Build VMs boot failure on the sudo-enabled infrastructure: incident postmortem</a></div>
<div class="sreweekly-description">
<p>Worker node errors led to cascading failure when they hit Google Compute Engine quotas.</p>
<p><small>Bogdana Vereha — Travis CI</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.theregister.co.uk/2018/09/25/secret_ibm_script_could_have_prevented_11_hour_us_tax_day_outage/" target="_blank">Secret IBM script could have prevented 11-hour US tax day outage</a></div>
<div class="sreweekly-description">
<p>This week, the US Internal Revenue Service (IRS) issued a <a href="https://www.treasury.gov/tigta/auditreports/2018reports/201820065fr.pdf">report</a> analyzing the tax-day outage that occurred this past April. Linked is a nice summary by the Register.</p>
<p><small><em>Thanks to reader Michael Fischer for a tip on the report.</em></small></p>
<p><small>Chris Mellor — The Register</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.rappler.com/technology/news/213055-facebook-suffers-apparent-downtime-forced-logouts-september-28-2018">Facebook</a></li>
<li><a href="https://internetofbusiness.com/iot-security-why-alexas-international-outage-is-a-blow-for-amazon/">Amazon Alexa</a></li>
<li><a href="http://www.mysuncoast.com/news/national/service-resumed-after-delta-experienced-network-outage/article_87f8cfb3-d842-5be5-bcd4-d36bd82511e3.html">Delta Airlines</a></li>
<li><a href="https://www.digitaltrends.com/home/honeywell-server-outage-left-users-unable-control-devices/">Honeywell (smart thermostat manufacturer)</a></li>
<li><a href="https://www.zdnet.com/article/domain-registrar-oversteps-taking-down-zoho-domain-impacts-over-30mil-users/">Zoho</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">SaaS provider Zoho&#8217;s domain registration was revoked by its registrar after a run-of-the-mill phishing complaint, affecting 30 million users.</li>
</ul>
</li>
<li><a href="https://xbt.net/blog/steemit-platform-fully-operational-following-platform-outage/">Steemit</a></li>
</ul>
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