Stress testing in node.js is used to determine the application’s robustness, identify breaking points, and ensure graceful handling of heavy loads.
Developers design stress tests to simulate real-world scenarios, often focusing on extreme usage conditions.
Stress tests in node.js are usually kept separate from unit tests and integration tests in a dedicated folder structure, including scenarios or cases for different load scenarios, configuration files, and helper scripts.
Key considerations for stress testing include setting up a test environment similar to production, incremental testing to pinpoint degradation thresholds, accounting for external factors, and testing various scenarios such as high concurrency, sustained load, burst traffic, resource exhaustion, connection flood, slow requests, error handling and recovery, dependency under load, and simulated DDoS scenario.