OpenTelemetry in Node.js Applications

Overview

This tutorial walks you through OpenTelemetry in Node.js Applications. You will build a complete, production-ready implementation from scratch.

Prerequisites

Before starting this tutorial, you should be familiar with:

• OpenTelemetry fundamentals
• Node.js fundamentals
• Observability fundamentals

Implementation

Step 1: Setup

Start by initializing your project and installing the required dependencies.

1npm init -y
2npm install opentelemetry-node.js

Step 2: Core Logic

Implement the core functionality. The key is to keep each component focused and testable.

1// core.ts
2export async function main() {
3  // Your implementation here
4  console.log("OpenTelemetry in Node.js Applications — complete!")
5}

Step 3: Testing

Validate your implementation with a basic test suite.

Summary

You have now completed the OpenTelemetry in Node.js Applications tutorial. The full source code is available in the companion repository.