Connection pooling in node-mongodb-native, when to call db.open and db.close

Question

I've read most questions here about node-mongodb-native but I can't work out the standard practice as to when I should open/close a connection.

Some sources say open/close as needed, some say use one db instance throughout. Does node-mongodb-native support automatic connection pooling? If so, how do I use this?

I would really appreciate example code showing correct use of db.open and db.close in relation to, say, a login request.

I know this is old, but there's an example using generic-pool here: github.com/dave-elkan/layered-express And about using poolSize options, there are more info here: mongodb.github.com/node-mongodb-native/api-generated/… — hurrycaner
– hurrycaner, Commented Jan 22, 2013 at 22:50

bbbonthemoon · Accepted Answer · 2012-06-16 11:21:46Z

4

I suggest to use generic-pool

It's very clear and pretty straightforward, you define how to open connection, how to close, and size of the pool. The module takes care of the rest, creating new connections as needed, and disposing unused connection after timeout you also select.

I use the module with every resource I need to pool, so I dont have to bother with custom pooling API every time.

answered Jun 16, 2012 at 11:21

bbbonthemoon

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3 Comments

Flash Over a year ago

Have you used it successfully with mongodb?

bbbonthemoon Over a year ago

yes, of course, but this is generic pool module, you can use it literally with any resource

Serhat Ozgel Over a year ago

This should not be necessary. MongoDB native driver already does connection pooling internally.

aymericbeaumet · Accepted Answer · 2015-05-26 18:01:14Z

1

This is the best answer I could find. Apparently, it works automatically, but I'm still figuring out the details.

Let me know if you find anything!

http://technosophos.com/node/255

edited May 26, 2015 at 18:01

aymericbeaumet

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answered Jun 26, 2012 at 18:53

Rob

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