Failure Engineering Explained by Uncle to Nephew — Episode 1: Why Failures Are Normal

Short summary

This article uses a conversational uncle-nephew format to teach that in distributed systems, every component — databases, networks, cloud providers, CPUs — can and will eventually fail. It draws a parallel to aviation, where planes are designed assuming failures will happen, and applies the same mindset to backend engineering. The core lesson is that engineers should build systems that fail safely and recover gracefully, rather than trying to make failure impossible.

• •Every component in a distributed system can fail — databases, networks, cloud providers, hardware, and deployments
• •Aviation designs for failure with redundancy and failovers; backend systems need the same mindset
• •The goal is not failure-free systems but systems that fail safely, notice problems, and recover gracefully

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