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ConFoo 2026· February 25, 2026 · Montreal, Canada
What's New in Spring Boot 4
A comprehensive guide to what matters most in the next major release of Spring Boot.
The next major release of Spring is here, and this is your comprehensive guide to what matters most. Spring Boot 4 delivers exceptional performance gains, streamlined developer workflows, and production-ready features that solve real-world challenges.
In this session, you'll not only learn what's new but experience it firsthand through live coding demos. We'll explore HTTP interfaces, JSpecify null safety, Jackson 3 integration, and the built-in resilience patterns that make your applications production-ready from day one.
What You'll Learn
- What's new in Spring Framework 7 and Spring Boot 4
- HTTP Interfaces for declarative HTTP clients
- JSpecify null safety annotations and their impact on your code
- Jackson 3 integration and migration path
- Built-in resilience patterns for production-ready applications
- Live coding demos showcasing the new features
Slides
Code
📦 Get the Code
All the code from this presentation can be found in the repository below.