Performance Testing

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Testing response times throughout the project lifecycle can help as an early indicator of performance issues.

Production-like environments are expensive to use - this can lead to limited load testing, and the resultant risks.

When benchmarking performance testing, don't change the codebase and the environment/infrastructure at the same time - freeze one whilst modifying the other.

Stress testing - finding where the app breaks. Load testing - testing how the app deals with a typical/estimated load

A degree of performance testing can be done at each CI build cycle, but not always to the degree that will show system-level performance issues.

Note: Stuart Moncrieff will put up his slidepack on Agile Performance Testing sometime soon.