Spring MVC vs WebFlux in 2025: Which One Should...

Spring MVC and Spring WebFlux solve the same problem — handling HTTP requests — but through completely different concurrency models. With Spring Boot 4 and Java 25 both shipping in late 2025, the landscape has shifted significantly. Let me walk through every dimension that matters for making the right architectural decision. Table of Contents 1. Programming model: imperative vs reactive 2. Framework internals: what's actually different under the hood 3. Cross-cutting concerns compared 4. Context