Spring Boot 4 and Spring Framework 7 brings native API versioning support! No more rolling your own solutions or dealing with inconsistent versioning across teams. Learn how to properly version your REST APIs using Spring's powerful new built-in mechanisms.

In this comprehensive tutorial, we'll build a complete application from scratch demonstrating the new API versioning features in Spring Boot 4.0. You'll discover multiple approaches to version your APIs - from path segments to request headers - and learn when to use each strategy for maximum flexibility and maintainability.

🎯 What You'll Learn:
✅ How to implement API versioning using path segments (e.g., /api/v1/users)
✅ Configure versioning through request headers, query parameters, and media types
✅ Create custom API version parsers for your specific needs
✅ Set up DTOs and mappers for different API versions
✅ Best practices for handling breaking changes vs. minor updates
✅ Configure versioning through both Java config and application.properties

💡 Key Highlights:
✅ Build a complete user management API with multiple versions
✅ Understand when to use v1.0 vs v1.1 vs v2.0 versioning strategies
✅ Learn how to maintain backward compatibility while adding new features
✅ Explore real-world scenarios for API evolution and client management

⏱️ Timestamps:
00:00 Introduction to API Versioning in Spring Boot 4
01:30 Why Native API Versioning Matters
03:00 Setting Up the Project with Spring Boot 4.0 RC1
05:00 Creating the User Model and Repository
08:00 Implementing DTOs and Mappers
12:00 Path Segment Versioning
16:00 Request Header Versioning
20:00 Custom API Version Parser
23:00 Query Parameter and Media Type Options
26:00 Configuration Best Practices
🔗 Resources:

GitHub Repository: https://github.com/danvega/api-users
Blog Post: https://www.danvega.dev/blog/spring-boot-4-api-versioning

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Dan Vega

Spring Boot 4 and Spring Framework 7 introduce built-in API versioning support, eliminating the need for custom roll-your-own solutions. A walkthrough covers building a Spring Boot 4 app from scratch with versioned REST endpoints using DTOs and mappers, then configuring API versioning via Java config or application.properties. Four versioning strategies are demonstrated: path segment (e.g., /api/1.0.0/users), request header (X-API-Version), query parameter, and media type parameter. Path segment overrides all others and cannot be mixed, while the other three can be combined. A custom API version parser can also be registered to support formats like 'v2' instead of '2.0.0'. Supported versions and a default version are declared centrally, promoting consistency across teams.

API Versioning Made Simple with Spring Boot 4.0