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Kraken - The Load Testing IDE

Kraken is a load testing IDE based on Gatling.

As such, Kraken provides a complete development environment to software programmers and load testers that seek to make the most out of Gatling:

  • A code editor to create and update .scala Gatling simulations with autocomplete suggestions and code snippets,
  • Simulations debugging and comparison with HAR imports,
  • Load tests analysis with aggregated data in InfluxDb displayed in comprehensive reports generated with Grafana,
  • Multi-hosts load injection using a Kubernetes cluster.

Support and Community


Kraken blog on OctoPerf


  1. Gatling - Getting Started with Simulation Scripts
  2. Gatling - Simulation Scripts Parameterization
  3. Gatling - Loops, Conditions and Pauses



Contact us at


Source code structure

The source code of Kraken is divided in several folders:

  • backend: this folder contains a Gradle multi-modules project that build all Java backends of Kraken,
  • deployment: private Git sub-module used to create and deploy all Docker containers,
  • development: contains shell scripts and docker-compose configuration to start the InfluxDb/Grafana stack in dev mode,
  • documentation: private Git sub-module that builds Kraken's documentation,
  • frontend: this folder contains an Angular project with several libraries and two applications: administration and gatling.


Run the application from the source code

To run Kraken from the source code, execute one of the following commands from the root folder of the repository:

  • make launch-docker to run the Docker version,
  • make launch-k8s to run the Kubernetes version.

Open the Makefile to know in detail what each of these tasks does.

Tests and bug finders


  • ./test-coverage-all to generate test coverage for the complete project,
  • make test APP=<library-or-app> to run tests for a single module (for example make test APP=commons),
  • make lint to run TSLint on the whole project.


  • make check to run all unit tests and SpotBugs,
  • make test APP=<module-path> to run unit test for a single sub-module (for example make test APP=:commons:docker-client).


Check out the next milestone.


Kraken is an open core product:

  • The majority of the code base is licensed under the Apache V2 License,
  • Some closed-source components, not available directly in this repository, requires a license (free or paid) from OctoPerf.