A Bootiful Podcast The legendary Sébastien Deleuze on all that’s new and nice in Spring Framework 7
Nov 20, 2025
Sébastien Deleuze, a pivotal Spring contributor, dives into the exciting features of Spring Framework 7 and Spring Boot 4. He discusses the smooth migration experience, highlighting improvements like modularization and nullability. Sébastien also covers the benefits of GraalVM 25, faster release cycles, and enhanced Kotlin support. He emphasizes innovations in AOT optimizations and testing support, while clarifying changes in Jackson compatibility. Tune in for insights on making the most of these groundbreaking updates in your development journey!
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Upgrade To Spring Boot 4 For Immediate Gains
- Upgrade to Spring Boot 4 and Spring Framework 7 to use many cross-portfolio improvements immediately.
- Try features like modularized starters and HTTP client auto-configuration to reduce startup and memory costs.
Java 25 AOT Cache Speeds Warmup
- Java 25's AOT cache (IoT Cache) supplies profiling to fast-forward JVM warmup and improve startup.
- Platforms can apply AOT Cache centrally so apps benefit without compatibility trade-offs.
Do A Training Run To Generate AOT Profiles
- If your platform doesn't provide IoT Cache, perform a training run in CI/CD or production to collect profile data.
- Treat this as an infrastructure/DevOps task, not an application code change.