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Gatling vs k6: What are the differences?
What is Gatling? open-source load testing framework based on Scala, Akka and Netty. Gatling is a highly capable load testing tool. It is designed for ease of use, maintainability and high performance Out of the box, Gatling comes with excellent support of the HTTP protocol that makes it a tool of choice for load testing any HTTP server. As the core engine is actually protocol agnostic, it is perfectly possible to implement support for other protocols. For example, Gatling currently also ships JMS support..
What is k6? Developer centric open-source load and performance testing tool. It is a developer centric open source load testing tool for testing the performance of your backend infrastructure. It’s built with Go and JavaScript to integrate well into your development workflow.
Gatling and k6 belong to "Load and Performance Testing" category of the tech stack.
Gatling and k6 are both open source tools. k6 with 5.57K GitHub stars and 287 forks on GitHub appears to be more popular than Gatling with 4.44K GitHub stars and 944 GitHub forks.
Pros of Gatling
- Great detailed reports6
- Loadrunner5
- Can run in cluster mode5
- Scala based3
- Load test as code2
Pros of k6
- Fits nicely in a CI workflow13
- It's code-first11
- Test scripts are written in javascript11
- Open-source11
- Easy to use10
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Cons of Gatling
- Steep Learning Curve2
- Hard to test non-supported protocols1
- Not distributed0
Cons of k6
- Requires bundling and transpiling to use npm packages3