CODEWITHSUNDEEP
node.jsmongodb
Marc Rasmussen
Marc Rasmussen

Reputation: 20555

Does mongodb require connection on each operation

So i am very new to mongodb and i wish to use it in my application. Now i HATE redundant code but reading up on how to use mongodb with node.js it seems that there is a pattern where you always have to connect before making any CRUD operation.

Example from the offical documentation:

MongoClient.connect(url, function(err, db) {
  assert.equal(null, err);
  insertDocument(db, function() {
      db.close();
  });
});

My question is. is it possible to make a middleware that keeps the connection open so you only has to call insertDocument (in the above example) ?

Upvotes: 3

Views: 266

Answers (2)

realtimez
realtimez

Reputation: 2555

You can also look into using Mongoose as you mentioned middleware.

The connection is only opened once (on the global scope) and then you can use it throughout the app.

Upvotes: 1

tengobash
tengobash

Reputation: 367

Yea of course, just keep the db variable around until you don't need it any longer - then call close()

var mdb;
MongoClient.connect(url, function(err, db) {
  assert.equal(null, err);
  mdb = db;
  insertDocument(mdb, function() {
      // ...
  });
});

// do other stuff with mdb

Upvotes: 3

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