Locust in 20 Minutes: Install, 10-Line Test, Web UI, First Load (Beginner Friendly)

Hands-on guide to run your first load test with Locust. We go from zero to results: install Locust, write a tiny 10-line HttpUser, launch the Web UI, and start your first swarm. You’ll learn when to use Locust, how to use httpbin.org safely, how to run headless, and how to read p95/p99 and error rates fast.

What’s inside (quick overview):
🧰 What Locust is and why it’s useful for devs/QA/SRE
📊 When to use it: percentiles (p95/p99), throughput, error budget, real journeys, CI
🖥️ Install → 10-line test → Web UI → start swarming
🧪 httpbin.org endpoints for safe demos (GET/POST, delay, status)
⚙️ Add behavior (weights, names), run headless, export CSV
🧩 Mini project: browse → view → add-to-cart → checkout
🔎 Read results and avoid common pitfalls (host, SSL, idempotency, ramp-up)