Spring Boot Migration Guides
Step-by-step migration guides for upgrading Spring Boot applications safely.
Spring Boot 2 → 3 (Jakarta EE)
Jakarta EE namespace change, Java 17 requirement
spring-bootjakartamigration
Spring Boot 3 → 4 Upgrade
Framework upgrades + config changes + validation
spring-bootmigrationupgrade
Spring Security 6 Migration
WebSecurityConfigurerAdapter removed, SecurityFilterChain migration
spring-securitysecuritymigration
Hibernate 6 Migration
Hibernate 6 stricter query parsing, JPQL updates
hibernatejpapersistence
Actuator Endpoint Changes
Endpoint path and configuration updates
actuatormonitoringspring-boot
Logging/Tracing/Observability Changes
Micrometer and observability improvements
observabilityloggingtracing