Learn to spot when an API buckles under traffic — then prove it with Postman’s Performance runner. You’ll build a small coffee API collection, practice reading avg vs p95 in a safe load lab, run a Fixed App test, and set a pass/fail bar you can reuse from the CLI. You'll need the Postman desktop app for the App run. Practice against the free Sample APIs coffee endpoints. Local App runs work on every plan.
What you'll practice
- Build a collection that can run under load (requests + tests + environment)
- Learn why averages mislead — and what p95 / errors tell you
- Train your eye in the in-browser load lab (safe simulation)
- Run the same collection in Postman’s Performance tab
- Read assertions under load, then pick a CLI-ready
--pass-ifbar
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