Is there any way to establish Redis connection when application starting

[charliezang]

Hi,

I've used springboot with lettuce to communicating with Redis, but I found when application started, it would not establish a connection to Redis, it would establish the connection when it need to communicate with Redis for the first time.
I could see that the first connection need more time then the rest, as the rest would use this connection.

My question is is there any way I can initialize the connection while the application starting?

here is my conf:

spring:
redis:
cluster:
nodes:
max-redirects: 5
password:
ssl: false
lettuce:
pool:
max-active: 8
max-idle: 8
min-idle: 0
max-wait: -1

I notice if I set both min-idle and time-between-eviction-runs, the min-idle would be effective.
But while application starting is this conf will initialize a connection to redis? Many Thanks

[jigneshmpatel]

I don't know how to fix that for the spring level, but we use @weblistener which extends ServletContextListener, which is being called by default when jboss server starts and that initiate connection pooling.
Following is a sample code, I googled !!
https://www.codejava.net/java-ee/servlet/weblistener-annotation-examples