Introduction to Artillery

Artillery is an open-source, modern, powerful, and easy-to-use load testing and functional testing toolkit for HTTP, HTTPS, and WebSocket APIs. Load testing lets you measure your system’s performance under a heavy load to identify any bottlenecks or potential issues. With Artillery, you can ensure that your application scales efficiently and provides a high-quality user experience.

Getting Started with Artillery

To install Artillery, you can use npm:

    npm install -g artillery

Artillery Configuration

An Artillery test requires a JSON or YAML configuration file. Here is a basic example:

    
    {
      "config": {
        "target": "http://localhost:3000",
        "phases": [
          {
            "duration": 60,
            "arrivalRate": 10
          }
        ]
      },
      "scenarios": [
        {
          "flow": [
            {
              "get": {
                "url": "/"
              }
            }
          ]
        }
      ]
    }
    

Useful API Explanations with Code Snippets

Here are some powerful APIs provided by Artillery:

HTTP Requests

    
    {
      "get": {
        "url": "/api/resource"
      }
    }
    

    
    {
      "post": {
        "url": "/api/resource",
        "json": {
          "field1": "value1",
          "field2": "value2"
        }
      }
    }
    

Loops and Conditions

    
    {
      "loop": [
        {
          "count": 5,
          "flow": [
            {
              "get": {
                "url": "/api/resource"
              }
            }
          ]
        }
      ]
    }
    

Using Variables

    
    {
      "variables": {
        "auth_token": "abc123"
      },
      "get": {
        "url": "/api/secure",
        "headers": {
          "Authorization": "Bearer {{ auth_token }}"
        }
      }
    }
    

Comprehensive App Example

Let’s create a comprehensive example with multiple APIs and scenarios:

    
    {
      "config": {
        "target": "http://localhost:3000",
        "phases": [
          {
            "duration": 60,
            "arrivalRate": 20
          },
          {
            "duration": 120,
            "arrivalRate": 50
          }
        ]
      },
      "scenarios": [
        {
          "name": "Scenario 1",
          "flow": [
            {
              "post": {
                "url": "/api/resource",
                "json": {
                  "name": "Artillery"
                }
              }
            },
            {
              "get": {
                "url": "/api/resource/1"
              }
            }
          ]
        },
        {
          "name": "Scenario 2",
          "flow": [
            {
              "post": {
                "url": "/api/resource",
                "json": {
                  "name": "Load Test"
                }
              }
            },
            {
              "get": {
                "url": "/api/resource/2"
              }
            }
          ]
        }
      ]
    }
    

With the above example, multiple scenarios can be tested simultaneously to ensure the robustness and scalability of your API.

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