Entreprise level python tcp server

Terry Reedy tjreedy at udel.edu
Wed Jul 9 21:18:06 CEST 2014

 > On 7/9/2014 3:36 AM, Arulnambi Nandagoban wrote:

 >> I like to convert the python script to windows application.

The proper way to do asynchronous io on Windows is quite different from 
the proper way to do it on posix systems (more or less everything other 
than Windows). If you plan on using a Windows server, pay no attention 
to benchmarks run on posix servers. More on this below.

On 7/9/2014 1:12 PM, Emile van Sebille wrote:
> EVE online uses stackless python
> (http://highscalability.com/eve-online-architecture) and has seen a max
> of some 40k simultaneous users.  You might want to look into how they do
> it.

Stackless used 'micro threads' managed by the interpreter without 
involving the OS. These are called 'green threads' because they save 
resources. They are available as 'greenlets' on PyPI and used by, among 
others, gevent. See

Python 3.4 comes with something similar -- tasks -- in the new asyncio 
library. On feature of asyncio is that it transparently implementation 
so the same asyncio code works well on Windows as well as posix. I don't 
know if this is true of other alternatives.

Python has an ftplib module. I suspect it could still be improved to 
work better with asyncio.

Terry Jan Reedy

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