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What does "fault tolerance" mean in programming?
fault tolerance is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The ability of a system to continue operating correctly even when some components fail. Achieved through redundancy, retries, circuit breakers, and graceful degradation. A fault-tolerant system fails safely rather than crashing entirely.
Example
"The distributed database is fault-tolerant — it continues serving requests even if one node goes down."
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