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Articles tagged with #sre
I've interviewed maybe 300 SRE candidates over the years. Most interviews are bad. Leetcode for people who don't write production code. System design questions ripped off from a blog. Here are the questions I actually ask, and why. 'Walk me through y...
I've run over 100 post-mortems. The worst ones end with 'Alice will be more careful.' The best ones end with 'we fixed the system.' Here's how you get from the first to the second. The language rule Ban these phrases from retros: 'Should have...' 'A...
Alert fatigue isn't a wellness issue. It's a production risk. And it's cheaper to fix than most people think. The math An engineer getting 30 alerts a night sleeps badly. Sleeps badly → cognitive load next day drops 20%. Drops 20% → higher chance of ...
SLOs get all the attention. I want to argue that your SLIs are more important. Here's the thing: an SLO is a number you pick. 99.9% uptime. 300ms p95 latency. Whatever. It's a decision. An SLI is what you're actually measuring. Is it the right signal...
Migrating from PagerDuty is not a weekend project. I learned this the hard way. Here's the playbook I wish I had. Before you start Audit every integration. Alerts, webhooks, Slack hooks, status page syncs. Ours had 47. I found 12 we had forgotten ab...
Last year our Datadog bill hit $38k/month. Leadership asked me to cut it in half. Here's how we got to $15k without losing a single useful signal. The 5 moves that worked 1. Dropped custom metrics with zero dashboard references. We had 2,400 custom m...
