Bun Express API with OpenTelemetry

Installation

bun install

Configuration

The application uses environment variables for configuration. These are stored in a .env file:

• PORT: The port number for the Express server (default: 3000)
• NODE_ENV: The environment (development, production, etc.)
• SERVICE_NAME: The name of the service for OpenTelemetry
• OTEL_EXPORTER_OTLP_ENDPOINT: The endpoint for the OpenTelemetry collector

Running the Application

Start the server:

bun run --preload './otel.ts' index.ts

The server will be available at http://localhost:3000

API Endpoints

• GET /: Returns a hello world message
• GET /health: Returns a health check status