Performance Testing and Tuning of Web Applications
summary
Uses Java with embedded GlassFish and testcontainers, runs 500 concurrent threads in repeated five‑second iterations, creates up to 500,000 users and measures response times (300 ms for one scenario, 50 ms after removing a costly list query). Shows batching and read‑replica patterns yield order‑of‑magnitude speedups, reproduces a bug where interrupted connections return to the JDBC pool, and demonstrates fault injection by disconnecting the database to observe timeouts, CPU throttling and I/O bottlenecks.
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chapters (7)
- 0:00Introduction
- 4:01Why performance testing matters
- 10:09Common bottlenecks
- 15:39Simple test setup
- 23:15Analyzing test results
- 35:57Handling variable results
- 41:42Q&A
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