Bootiful Spring Boot 3.x
summary
Demonstrates upgrading to Java 21 baseline with Spring Boot 3.2.3, building a service that uses Docker Compose + Postgres, Spring Data JDBC repo, DevTools hot reload and a Spring AI OpenAI chat client that returns a poem. Shows JVM virtual threads handling thousands of blocking waits with near-reactive scalability. Uses Spring AOT + GraalVM native-image: ~51s compile, 99MB binary, 0.1s startup and ~118MB RSS. Claims observability, declarative HTTP/RSocket, Loom/CRaC support and Kotlin coroutine ergonomics are production-ready.
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chapters (10)
- 0:00Introduction to Spring Boot 3.x
- 2:10Why Spring Boot 3.x is a game changer
- 8:34New Spring Boot 3.2.3 project
- 10:01Java 21 features in Spring Boot
- 27:17AI with Spring AI and OpenAI
- 36:54Virtual threads in Java 21
- 48:17Production with Spring Boot
- 50:07Containerizing Spring Boot apps
- 55:20Native with GraalVM
- 58:11Q&A
