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From: Troy Kruthoff <tkruthoff@gmail.com>
To: user@couchdb.apache.org
In-Reply-To: <b66ddc900903140536i49ede800xedac02f19d6fcf9a@mail.gmail.com>
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Subject: Re: Use couchdb as the data store for real-time chat room
Date: Sat, 14 Mar 2009 06:08:34 -0700
References: <b66ddc900903140320u5bdbf3ffoaed76f332899c45e@mail.gmail.com>
 <49BBA112.3090700@gmx.de>
 <b66ddc900903140536i49ede800xedac02f19d6fcf9a@mail.gmail.com>

If performance and scalability are important you'll:

1) use xmpp as the backend
2) use evented anything over apache/fork/php (I recommend Twisted).   
You can still serve all the html, etc, with php, but hit the twisted  
server with the ajax long poll.

If you google around, you'll find the consensus of many before you.

-- troy


On Mar 14, 2009, at 5:36 AM, howard chen wrote:

> Hi,
>
> On Sat, Mar 14, 2009 at 8:20 PM, Sven Helmberger <sven.helmberger@gmx.de 
> > wrote:
>
>> This sounds like it could be the main performance problem. I would  
>> expect
>> some form of COMET or even the long request pattern to improve your
>> performance.
>>
>
>
> Yes, but we are serving many concurrent users, so I don't want to hold
> a persistence connection from the server to client. (we are using
> Apache2/pre_fork, mod_php)
>
> As since our polling interval is adaptive, is it quite easy to scale
> by adding servers currently.
>
> Howard