PostHog Traffic Simulator

A tool to simulate user traffic for PostHog applications, useful for testing feature flags, events, and analytics.

Requirements

• Node.js
• Python 3
• PostHog instance

Installation

1. Clone the repository:

   git clone https://github.com/andehen/posthog-traffic-simulator.git
   cd posthog-traffic-simulator
   

2. Install Node.js dependencies:

   npm install
   

Configuration

Set the following environment variables:

• POSTHOG_API_KEY: Your PostHog API key
• FEATURE_FLAG_KEY: Feature flag key to test (default: "test-anon-2")
• API_HOST: PostHog API host (default: "http://localhost:8010")
• PORT: Port for the test server (default: 5001)

Usage

1. Start the test server:

   python serve.py
   

2. Run the traffic simulator:

   node simluate-traffic.js
   

Parameters

Adjust simulation parameters in simluate-traffic.js:

• NUM_BROWSERS: Number of browser instances to create
• ITERATIONS_PER_BROWSER: Number of page loads per browser
• MAX_CONCURRENT_BROWSERS: Maximum concurrent browser instances

How It Works

The simulator uses Puppeteer to launch headless Chrome browsers that visit your PostHog-instrumented page. It rotates user agents and manages concurrency to create realistic traffic patterns.