Performance Testing — a practical guide to performance testing with clear examples you can reuse in real projects.
QA Testing Tutorial Series (68/112). Prefer one article? Read the complete QA testing tutorial.
Short description
Define SLAs first (response time, error rate, throughput) then test against them.
Perf metrics
Response time
Throughput
Error %
CPU/memory
Apdex / percentiles (p95)