Load testing for HTTP, Socket.io and WebSockets. Make your systems indestructible! ๐Ÿ‘Š๐Ÿผ
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Latest commit 5f7251b Jan 6, 2017 @hassy hassy 1.5.0-22


Artillery is a modern, powerful, easy-to-use load-testing toolkit.

Artillery has a strong focus on developer happiness & ease of use, and a batteries-included philosophy. Artillery's goal is to help developers build faster, more resilient and more scalable applications.


  • Mulitple protocols: Load-test HTTP, WebSocket and Socket.io applications
  • Scenarios: Specify scenarios to test multi-step interactions in your API or web app
  • Perfomance metrics: get detailed performance metrics (latency, requests per second, concurrency, throughput)
  • Scriptable: write custom logic in JS to do pretty much anything
  • High performance: generate serious load on modest hardware
  • Integrations: statsd support out of the box for real-time reporting (integrate with Datadog, Librato, InfluxDB etc)
  • Extensible: custom reporting plugins, custom protocol engines etc
  • and more! HTML reports, nice CLI, parameterization with CSV files

Build Status gitter

Use Cases

  • Peak traffic testing - ensure your e-commerce backend, IoT service or web API can handle max traffic
  • Pre-launch load testing - for new websites, mobile app backends, web APIs etc
  • Continuous performance testing for new microservices as they are being built
  • Preventing performance regressions - stop performance regressions due to new code or config changes before they are shipped to users
  • Help profile & debug common issues such as extensive GC pauses, memory leaks, improperly configured resource pools etc

There's a lot of fun to be had with a good load generator like Artillery.



Artillery is available via npm

$ npm install -g artillery

Node.js v4+ is required (Node.js 6 is recommended).

Run A Quick Test

$ artillery quick -d 30 -r 5 -n 20

This will run a test for 30 seconds, with 5 new virtual users created every second, with each user sending 20 a GET requests to

Run With A Scenario

Artillery's power lies in emulating complex behavior, like that of users of an e-commerce website, a transactional API etc.

Run a scenario with:

$ artillery run hello.yaml

Where hello.yaml is your tests script that contains something like:

(NB: test scripts can be written as JSON too)

  target: ""
    - duration: 120
      arrivalRate: 10
      content-type: "application/json"
      x-my-service-auth: fedcba9876543210
  - flow:
      - get:
          url: "/test"
      - think: 1
      - post:
          url: "/test"
            name: "Hassy"

This will run a test for 2 minutes, with 10 virtual users created every second, each of which will send a GET and a POST request with a pause of 1 second in between. Each request will include two custom headers (Content-Type and X-My-Service-Auth).

Create A HTML Report

Once the test completes, you can create a graphical report from the JSON stats produced by artillery run with: artillery report <report_xxxxx.json>

These are self-contained HTML files that can be easily shared via email or Dropbox for example.

Learn More

See Artillery docs for docs and examples.


Thinking of contributing to Artillery? Awesome! Please have a quick look at the guide.

Using Artillery?

Are you using Artillery to ship faster, more resilient and more scalable systems? Add your team to the Artillery users list on the wiki.


Artillery is open-source software distributed under the terms of the MPL2 license.