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What does "performance" mean in programming?
performance 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
How fast and efficiently a system responds to requests under expected and peak load. Measured through response time, throughput, CPU usage, and memory consumption. Poor performance is often discovered through profiling and load testing.
Example
"We profiled the endpoint and found a slow query that was degrading performance under load."
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