[nycbug-talk] IMAP Caching

Charles Sprickman spork at bway.net
Thu Jun 7 16:22:02 EDT 2007

On Thu, 7 Jun 2007, Steven Kreuzer wrote:

> Greetings-
> At last nights meeting, someone in the audience asked if anyone
> had any tips for increasing the performace of an IMAP server.
> I did a little searching and found a caching proxies for IMAP
> Take a look at http://www.imapproxy.org/

I've been using this to speed up webmail (squirrelmail) for some time now. 
I have not run into any problems with it so far.  If you are dealing with 
a php-based webmail app, a php accelerator really, really helps.


>> From the FAQ:
> imapproxy was written to compensate for webmail clients that are
> unable to maintain persistent connections to an IMAP server. Most
> webmail clients need to log in to an IMAP server for nearly every
> single transaction. This behaviour can cause tragic performance
> problems on the IMAP server. imapproxy tries to deal with this
> problem by leaving server connections open for a short time after
> a webmail client logs out. When the webmail client connects
> again, imapproxy will determine if there's a cached connection
> available and reuse it if possible.
> Hope this helps.
> Also, if the person who asked the question can post a little more
> about the problems he is experiancing, as well as details of his
> setup, I am sure numerious people on this list will be able to
> offer advice.
> -- Steven Kreuzer
> http://www.exit2shell.com/~skreuzer
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