Whats the difference between THsHaServer and TNonblockingServer?

Whats the difference between those two ?

And where do I find a good doc about what is what ?

I went through their JavaDoc, and开发者_StackOverflow中文版 it doesn't explain a lot of questions [ which I am going to haunt you guys with :) ]

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The best I could find is from the Thrift Wiki - ThriftUsageC++:

TNonblockingServer with a thread pool is the c++ alternative of the JAVA THsHaServer, TNonblockingServer without a thread pool is the c++ alternative of the JAVA TNonblockingServer.