Very slow Spring Boot application startup

Question

I have a simple Spring Boot application that connects to a PostgreSQL database and serves as a JSON service. Somehow the startup has become very slow, see timings 10:37:10 a

Answer 1

When I point to database in AWS RDS server it takes 78 seconds. After given this configuration it takes 52 seconds.

spring:
  jpa:
    properties:
      hibernate:
        temp:
          use_jdbc_metadata_defaults: false

And after given this configuration with the above configuration it takes only 10 seconds.

spring:
  jpa:
    hibernate:
      ddl-auto: none