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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-331/">SRE Weekly Issue #331</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-331/">July 24, 2022</a>
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<a href="https://sreweekly.com/sre-weekly-issue-331/" title="Permalink to SRE Weekly Issue #331" 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, <a href="https://rootly.com/demo/?utm_source=sreweekly">Rootly</a>:</h2>
<p>Manage incidents directly from Slack with Rootly 🚒. Automate manual admin tasks like creating incident channel, Jira and Zoom, paging and adding responders, postmortem timeline, setting up reminders, and more. Book a demo (+ get a snazzy Rootly lego set):<br>
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<h2 class="wp-block-heading">Articles</h2>
<div class="wp-block-group"><div class="wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow">
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://disastercast.co.uk/wp/" target="_blank" rel="noopener">DisasterCast – A podcast about scary things and how to stop them happening</a></div>
<div class="sreweekly-description">
<p>I&#8217;ve been listening to this podcast this week and I love it! Each episode covers a disaster, safety theory, and other topics — with no ads. Their site is down right now, but the podcast is available on the usual platforms.</p>
<p>&nbsp;&nbsp;<small>Drew Rae — DisasterCast</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://betterprogramming.pub/the-path-of-getting-comfortable-in-production-c88456146f00" target="_blank" rel="noopener">An 8 Step Guide to Go From a Clueless to a Production-aware Software Engineer</a></div>
<div class="sreweekly-description">
<p>If we want to get folks to own their code in production, we need to teach them how to think like an SRE.</p>
<p>&nbsp;&nbsp;<small>Boris Cherkasky</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://firehydrant.com/blog/3-mistakes-ive-made-at-the-beginning-of-an-incident-and-how-not-to-make-them/" target="_blank" rel="noopener">3 mistakes I’ve made at the beginning of an incident (and how not to make them)</a></div>
<div class="sreweekly-description">
<blockquote>
<p>Let’s look at three mistakes I’ve made during those stressful moments during the beginning of an incident — and discuss how you can avoid making them.</p>
</blockquote>
<p>The mistakes are:</p>
<blockquote>
<p>Mistake 1: We didn’t have a plan.<br>
Mistake 2: We weren’t production ready.<br>
Mistake 3: We fell down a cognitive tunnel. </p>
</blockquote>
<p>&nbsp;&nbsp;<small>Robert Ross — FireHydrant</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blixhavn.dev/when-to-kill-the-canary/" target="_blank" rel="noopener">When to kill the canary</a></div>
<div class="sreweekly-description">
<p>At what point does your canary test indicate failure? Should the criteria be the same as your normal production alerting?</p>
<p>&nbsp;&nbsp;<small>Øystein Blixhavn</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.honeycomb.io/blog/counting-alerts/" target="_blank" rel="noopener">On Counting Alerts</a></div>
<div class="sreweekly-description">
<p>This is a followup to a <a href="https://www.honeycomb.io/blog/tracking-on-call-health/">previous article</a> about on-call health. In this one, the author shares metrics about the number of alerts and discusses whether this number is useful.</p>
<p>  <small>Fred Hebert — Honeycomb</small></p>
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</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.razorpay.com/high-availability-on-razorpay-payments-dashboard-c4a09f66aa61?source=rss----6407ad2e59af---4" target="_blank" rel="noopener">High Availability on Razorpay Payments Dashboard</a></div>
<div class="sreweekly-description">
<p>Their dashboard crashed for 50% of user sessions, so they had a lot of work ahead of them. Find out how they got crash-free sessions to 99.9% and improved their time to respond to incidents.</p>
<p>  <small>Sandesh Damkondwar — Razorpay</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://twitter.com/atoonk/status/1550896347691134977?s=21&amp;t=esTnMEIkcgxlQCEuUb2RSg" target="_blank" rel="noopener">@atoonk on Twitter summarizing the Rogers Communications outage</a></div>
<div class="sreweekly-description">
<p>Rogers Communications, a major telecom in Canada, had a country-wide outage earlier this month. I don&#8217;t normally include telecom outages in the Outages section because they rarely share information that we can learn from.</p>
<p>This time, Rogers released a (redacted) report on their outage, and this Twitter thread summarizes the key points.</p>
<p>&nbsp;&nbsp;<small>@atoonk on Twitter</small></p>
</div>
</div>
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<h2 class="wp-block-heading">Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.straitstimes.com/tech/tech-news/global-users-of-microsoft-teams-hit-by-outage-since-9am-office-365-also-affected">Microsoft Teams and Office 365</a>
</li><li><a href="https://www.theregister.com/2022/07/21/teams_outage/">Microsoft blames storage error for Teams outage</a>
</li><li><a href="https://status.cloud.google.com/incidents/vLsxuKoRvykNHW3nnhsJ">Google Cloud Storage</a>
</li><li><a href="https://status.cloud.google.com/incidents/XVq5om2XEDSqLtJZUvcH">Google Cloud europe-west2 region</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">
<blockquote>
<p>Preliminary root cause has been identified as multiple concurrent failures to our redundant cooling systems within one of the buildings that hosts the europe-west2-a zone for the europe-west2 region.</p>
</blockquote>
</li></ul>
</li></ul>
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