Building Resilient Systems: Lessons from Production

After handling countless production incidents, I've learned that resilience isn't about preventing failures—it's about handling them gracefully.

Design for Failure

Assume everything will fail:

Services will go down

Databases will become unavailable

Networks will partition

Build with these assumptions in mind.

Don't let cascading failures take down your entire system. Circuit breakers prevent this.

You can't monitor for unknown unknowns. Build systems that let you ask arbitrary questions about their behavior.

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