Query related to production environment

Question

I have configured my production environment with the following details:

1. Three config server
2. Two router(mongoose)
3. Two shards of three replica set.

My question is, I am trying to connect to the sharded database with the help of mongo java driver. So, if I give my two mongoose IP for connection,how will it select one mongoose for routing data, in other words which mongoose will be selected as the primary router and how the other one will be picked if one goes down.

Do you mean mongos instead of Mongoose? In Java I believe it based upon latency — Sammaye, Sep 18 '13 at 08:58
@Sammaye does that mean if my application is deployed in two different server, both talk to my database through different mongos? — Phalguni Mukherjee, Sep 18 '13 at 09:01
There is your answer: http://grokbase.com/t/gg/mongodb-user/1395cqbag0/how-does-mongo-driver-pick-best-mongos#20130906wb6qy77tgwrf7p75aevf22mif4 — Sammaye, Sep 18 '13 at 09:05

score 2 · Answer 1 · answered Sep 18 '13 at 10:30

As stated by Jeff Yemin on the google user group ( http://grokbase.com/t/gg/mongodb-user/1395cqbag0/how-does-mongo-driver-pick-best-mongos#20130906wb6qy77tgwrf7p75aevf22mif4 ) the Java driver will actually use the first mongos to respond to a ping.

So if your application is geographically distanced and you have a mongos in each geographic location then separate processes of your application could use different mongos instances based on what is optimal.

Query related to production environment

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