The Incident Review: 4 Times When Typos Brought Down Critical Systems

Ask an SRE to name the most serious threats to reliability, and typos probably won’t feature on the list.

But maybe they should. Sometimes, an errant keystroke is all it takes to bring critical systems offline. And unlike text messages and email, these systems don’t usually have autocorrect tools to step in and save the day.

Testing in CI

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Automated tests are a key component of continuous integration (CI) pipelines. They provide confidence that with newly added check-ins, the build will still work as expected. In some cases, the automated tests have the additional role of gating deployments upon failure.