Threads in nanoserver example|OPC UA Implementation: Stacks, Tools, and Samples|Forum|OPC Foundation

Hi,

I have run nanoserver and I have seen that several threads are created, for example I / O dispatcher, Blocking-Work-Executor, Non-Blocking_Executor etc.

1) Is it possible to have information about them?
2) What is the difference between a Blocking-Work-Executor and Non-Blocking_Executor?
3) I / O dispatcher is only needed for http connections?
4) can I customize the thread pool? Are there any limits on the min and max number?

Thanks in advance
Regards

Mike