Resumen Completo para Podcast (con información verificada) 🧪 What is JMeter? Open-source tool by Apache. Used to test performance, load, stress, spike, and endurance. Simulates multiple users sending requests. ⚙️ Key Concepts Thread Group = virtual users Samplers = type of request (HTTP, JDBC, etc.) Listeners = show results (graphs, tables) Assertions = test validations (e.g., response code = 200) Timers = add delay between requests Controllers = manage flow (if, loop, etc.) 🔁 Test Flow Create Thread Group (e.g., 10 users, 5 loops) Add HTTP Sampler → define API URL, method (GET/POST), params Add Assertions → check response codes/content Add Listener → view results (Table, Graph, Tree) Run test and analyze metrics 📈 Key Metrics to Observe ⏱ Response Time → how long request takes 🔁 Throughput → how many requests/sec 📉 Error Rate → % of failed requests 📦 Latency → time to first byte 🧍‍♂️ Concurrent Users → how system handles load 🎯 Types of Performance Tests Load → expected user volume Stress → push past limits Spike → sudden user jumps Soak → long-duration testing 🔧 Useful JMeter Features CSV Data Set Config → pass test data Assertions → response validation Post-Processors → extract variables (e.g., JSON extractor) Timers → simulate real user pacing 🧪 Example Use Case API /login under load: 100 users 10 loops each Assert response = 200 Measure average response time