Stress testing with Artillery

To ensure a server can handle a certain amount of requests per second for a certain delay, we can use stress testing.

Artillery is a library for stress testing. We define scenarios in a YAML file and how we want to simulate users making requests accord to scenarios. Here is an example of configuration for a chat application:

yaml
# chat.yaml
config:
  target: "http://localhost:3333"
  phases:
    # Create up to 10 virtual users per second in one minute
    - duration: 60
      arrivalRate: 10
    # Create up to 100 virtual users per second in ten minutes
    - duration: 600
      arrivalRate: 100
scenarios:
  # Enable sending Socket.io events
  - engine: "socketio"
    flow:
      # Create a user
      - post:
          url: "/sign-up"
          json:
            username: "Jean-Louis Murat"
            password: "La Princesse of the Cool"
      # Get my information
      - get:
          url: "/me"
      # Add a friend
      - post:
          url: "/friend"
          json:
            id: "b0518bea-4df4-415c-a01d-129ecae34c33"
      # Send a message to my friend
      # HTTP requests and Socket.io events can be mixed!
      - emit:
          channel: "chat"
          data:
            userId: "b0518bea-4df4-415c-a01d-129ecae34c33"
            message: "Hello JL!"

Stress testing with Artillery

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