Api Versioning Strategy

API Versioning Strategy

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Comprehensive guide to API versioning approaches, deprecation strategies, backward compatibility techniques, and migration planning for REST APIs, GraphQL, and gRPC services.

When to Use

• Designing new APIs with versioning from the start
• Adding breaking changes to existing APIs
• Deprecating old API versions
• Planning API migrations
• Ensuring backward compatibility
• Managing multiple API versions simultaneously
• Creating API documentation for different versions
• Implementing API version routing

Quick Start

Minimal working example:

// express-router.ts
import express from "express";

const app = express();

// Version 1
app.get("/api/v1/users", (req, res) => {
  res.json({
    users: [{ id: 1, name: "John Doe" }],
  });
});

// Version 2 - Added email field
app.get("/api/v2/users", (req, res) => {
  res.json({
    users: [{ id: 1, name: "John Doe", email: "john@example.com" }],
  });
});