How to restrict initial pool size in hikaricp?

Question

I used to have a tomcat connection pool configuration restricting the initial pool size: spring.datasource.tomcat.initial-size=2

Now switch

Answer 1

You can use these properties provided in spring boot:

spring.datasource.hikari.minimumIdle=5
spring.datasource.hikari.maximumPoolSize=8

and then:

spring.datasource.hikari.idleTimeout=120000

to limit the life of idle connections, but hikari doesn't give you such property for initial number of connections.