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What does "reliability" mean in programming?
reliability 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 perform its required functions without failure over a specified period. Reliability focuses on correct behavior over time, not just uptime. A reliable system does the right thing, consistently.
Example
"The payment service has high reliability — it has not lost a transaction in two years of production use."
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