Date: Mon, 24 Sep 2012 21:54:12 -0700 (PDT)
From: David Hows <david.h...@10gen.com>
To: mongodb-user@googlegroups.com
Message-Id: <0f9c80f5-e0dc-417d-85c4-caaab3352666@googlegroups.com>
In-Reply-To: <cc071176-7ba0-4e2b-9c3c-335cd9fbc90e@googlegroups.com>
References: <cc071176-7ba0-4e2b-9c3c-335cd9fbc90e@googlegroups.com>
Subject: Re: How to connect to multiple mongod instances with c++ driver
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Thomas,

My understanding is that you have two independent mongod instances which 
contain different data and must be queried independently. You wish to have 
only one connection object (your hook as given) which will take all 
database requests and then route them accordingly.

There is no way within mongo itself to hold two unrelated connections, to 
different servers and deterministically route commands towards them. If you 
wish to do this it would be best to extend your hook class to determine 
from a given command which database it should use from your pool. 

You can do this a number of ways ranging from a simple flag to select 
database right through to pre-preparing a list of all databases and 
collections and examining the query to determine where i should be routed.

If i have misunderstood any clarifications would be great,

Good luck,

David

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Thomas,<div><br></div><div>My understanding is that you have two&nbsp;indep=
endent&nbsp;mongod instances which contain different data and must be queri=
ed independently. You wish to have only one connection object (your hook as=
 given) which will take all database requests and then route them&nbsp;acco=
rdingly.</div><div><br></div><div>There is no way within mongo itself to ho=
ld two unrelated connections, to different servers and&nbsp;deterministical=
ly&nbsp;route commands towards them. If you wish to do this it would be bes=
t to extend your hook class to determine from a given command which databas=
e it should use from your pool.&nbsp;</div><div><br></div><div>You can do t=
his a number of ways ranging from a simple flag to select database right th=
rough to pre-preparing a list of all databases and collections and examinin=
g the query to determine where i should be routed.</div><div><br></div><div=
>If i have misunderstood any clarifications would be great,</div><div><br><=
/div><div>Good luck,</div><div><br></div><div>David</div>
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