What if I do not include expireAfterWrite is there any harm?

[Fazeel Usmani]

I want to store 3 constant values which should be always in cache and is used almost everytime. I thought of removing expireAfterWrite and will this work?

Currentlly, there are only 3 entries for SystemUser and limiting it to only 100.

private final LoadingCache<String, Optional<SystemUser>> systemUserCache = CacheBuilder

.newBuilder()

.maximumSize(100)

.build(

new CacheLoader<>() {

@Override

public Optional<SystemUser> load(String wsGlobalId) {

return getSystemUser(wsGlobalId);

}

}

);