//To enable graceful shutdown
server.shutdown=graceful
//To configure the timeout period(here I set the time values as 1minute)
spring.lifecycle.timeout-per-shutdown-phase=1m

Ref

• https://docs.spring.io/spring-boot/docs/2.3.0.RELEASE/reference/html/spring-boot-features.html#boot-features-graceful-shutdown
• https://stackoverflow.com/questions/66117438/how-to-make-the-springboots-shutdownhook-wait-till-all-of-its-processing-reque