Spring Boot Unwrapped: Exploring the Latest Features
summary
Covers concrete changes in Spring Boot 3.2–3.4: automatic trace/span IDs in logs and structured logging (JSON with ECS, GELF, Logstash), Micrometer Tracing replacing Spring Cloud Sleuth, new fluent REST and JDBC clients, Spring AI metrics on the actuator, and actuator additions (process/SSL info, CycloneDX SBOM, /actuator/tasks). Java 21 virtual threads flip on with one property, buildpacks swap to a tiny builder giving 23% smaller images, and using CDS plus AOT cuts startup time and memory roughly in half.
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chapters (12)
- 0:00Spring Boot 3.x features
- 3:58Observability in 3.4
- 9:38Virtual threads support
- 11:46REST and JDBC clients
- 15:57Actuator enhancements
- 22:14Container packaging with Buildpacks
- 25:04Class Data Sharing
- 31:22Bean overriding for testing
- 35:15Mock MVC with AssertJ
- 38:04Upgrading to 3.x best practices
- 39:28Spring Boot 3.5 future
- 40:33Q&A
