Java – when to use akka microkernel?

I'm reading the akka document and I'm curious that some things haven't been well explained Their mention is called akka microkernel and mentions some kind of application boot / launcher, but they don't really explain what it is and when to use it

Later in the document, there is an entity page dedicated to microkernel, but it is also mysterious and vague. Note:

then:

But there's nowhere to explain what a microkernel is and why I need to use it Ideas?

Solution

According to Viktor Klang, inventor of microkernel:

and

This Google post may provide you with more information