Re: Multiplexing proxy gateway requests to backend servers

On Mon, 2002-08-19 at 07:13, Bill Stoddard wrote:
> Consider mod_proxy used to serve as a proxy gateway (aka reverse proxy) to a
> set of backend servers.  Seems that it would be useful to maintain a pool of
> connections to the backend servers and multiplex HTTP requests over these
> connections (to save connection setup and takedown). Anyone have any ideas
> on whether this would be a worthwhile performance improvement?
> 

I was thinking of doing something like this for quite some time.
the only issues I can see are 
keepalives.. 
	* do they handle things like cookies per request or per 
	  connection?
	* authentication
	* handling of keepalive timeouts might be tricky
	* ie.. do keepalives keep some state, I am never sure

there are also some other minor problems if you want to load balance the
backendservers, as that would break.

The reason I never pursued it was due to the backends we use being so
pathetic that they can't even handle simple Keep-alives without falling
over.

Oh apr_reslist would be a good starting point for this.


> Bill
-- 
Ian Holsman
Performance Measurement & Analysis
CNET Networks
PH: 415-344-2608