4.0.0 org.springframework.boot spring-boot-starter-parent 4.1.2 com.ankurm idempotency 1.0.0 idempotency Idempotency-Key for POST APIs on Spring Boot 4.1: a Redis store and a Postgres store behind one servlet filter, replays, 422 on a changed body, concurrent duplicates, expiry and the crash window 25 org.springframework.boot spring-boot-starter-webmvc org.springframework.boot spring-boot-starter-data-redis org.springframework.boot spring-boot-starter-jdbc org.postgresql postgresql runtime org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin org.apache.maven.plugins maven-surefire-plugin -Duser.timezone=UTC