what is regression testing and performance testing

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Regression testing is retesting of software to ensure new code changes do not adversely affect existing functionality. Performance testing is testing to assess the speed, responsiveness, and stability of a system under a particular workload.

Regression testing ensures that new code changes do not introduce new bugs or issues in existing functionality.
Performance testing evaluates the speed, responsiveness, and stability of a system under specific workloads.
Regression testing is typically automated to efficiently test large codebases.
Performance testing includes load testing, stress testing, and scalability testing.
Examples: Running regression tests after a software update to ensure existing features still work, conducting performance tests to determine how a website performs under heavy traffic.

what is regression testing and performance testing

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