NOT USED
How many requests do we handle concurrently?
If the system gets really loaded, too many concurrent threads will create vicious cycles
and make everyone slow (or worst case choke every request by OOME), so better to err
on the conservative side (and have inbound connections wait in the queue)
NOT USED
Leave this number of request handler threads in the pool even when they are idle.
Other threads are destroyed when they are idle to free up resources.
HELP - Static variable in class winstone.cmdline.Option