K6 — screenshot of k6.io

K6

k6 is an open-source load testing tool from Grafana. It enables engineering teams to script performance tests in JavaScript, supporting various test types for continuous application reliability.

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Questions & Answers

What is k6?
k6 is an open-source load testing tool developed by Grafana, designed for engineering teams to test the performance and reliability of their applications. It allows users to script tests in JavaScript to simulate various traffic patterns.
Which types of engineering teams benefit from using k6?
k6 is designed for backend and frontend developers to prevent regressions, Site Reliability Engineers to test scalability and SLOs, and Software Engineers in Test/QA for shift-left performance testing.
How does k6 stand out from other load testing tools?
k6 differentiates itself by offering a developer-centric experience, enabling test scripting in JavaScript, and supporting a wide range of protocols including HTTP, GraphQL, WebSocket, and gRPC. It integrates well within modern CI/CD pipelines.
In what scenarios should k6 be used?
k6 should be used for continuous performance testing throughout the development lifecycle, including stress tests, spike tests, soak tests, and end-to-end web testing. It is also suitable for synthetic monitoring and fault injection testing.
Can k6 tests be run in different environments?
Yes, k6 tests can be executed locally on a developer's machine, in distributed environments like Kubernetes, or via the Grafana Cloud k6 SaaS offering, using the same JavaScript test scripts for consistent execution.