Andrew Warkentin wrote: > On Jul 10, 8:19 pm, Steve Holden <[EMAIL PROTECTED]> wrote: >> Bjoern Schliessmann wrote: >>> Andrew Warkentin wrote: >>>> I am going to write a general-purpose modular proxy in Python. It >>>> will consist of a simple core and several modules for things like >>>> filtering and caching. I am not sure whether it is better to use >>>> multithreading, or to use an event-driven networking library like >>>> Twisted or Medusa/ Asyncore. Which would be the better >>>> architecture to use? >>> I'd definitely use an event-driven approach with Twisted. >>> Generally, multithreading is less performant than multiplexing. High >>> performance servers mostly use a combination of both, though. >> Converselt I'd recommend Medusa - not necessarily because it's "better", >> but becuase I know it better. There's also a nice general-purpose proxy >> program (though I'd be surprised if Twisted didn't also have one). >> >> > Would an event-driven proxy be able to handle multiple connections > with large numbers of possibly CPU-bound filters? I use The > Proxomitron (and would like to write my own proxy that can use the > same filter sets, but follows the Unix philosophy) and some of the > filters appear to be CPU-bound, because they cause The Proxomitron to > hog the CPU (although that might just be a Proxomitron design flaw or > something). Wouldn't CPU-bound filters only allow one connection to be > filtered at a time? On the Medusa site, it said that an event-driven > architecture only works for I/O-bound programs. > Well since Medusa doesn't thread or fork you are correct, it's likely that connection requests could be rejected if the response processors take a significant amount of real and CPU time.
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