Load Testing with Impulse at Airbnb

Airbnb developed Impulse, a comprehensive load-testing-as-a-service framework with four key components: a context-aware load generator that uses Java/Kotlin code for flexible test scenarios, a dependency mocker for stubbing downstream services, a traffic collector for capturing and replaying production traffic, and a testing API generator for converting asynchronous workflows into testable HTTP APIs. The decentralized, containerized architecture enables teams to perform self-service load testing integrated with CI/CD pipelines while isolating tests and optimizing costs through short-lived containers.