Null values are not cached

[morki]

Is it intended that null value is not cached? I think it has to be configurable, because null is valid value for me, or am I missing something?

Example:

@Cacheable("test")
fun getCompanyForUser(id: Long): String? {
   // implementation
}

Not every user has to have company, but when the method returns null, it's not cached, but called every time. I didn't even find this behaviour documented.

I am using io.micronaut.cache:micronaut-cache-caffeine:2.0.0.M2.