Reliably reconnect to MongoDB

Question

UPDATE: I am using the 2.1 version on the driver, against 3.2

I have a node application that uses MongoDB. The problem I have is that if the MongoDB

Answer 1

Behavior may differ with different versions of driver. You should mention your driver version.

driver version : 2.2.10 (latest) mongo db version : 3.0.7

Below code will extend the time mongod can take to come back up.

var MongoClient = require('mongodb').MongoClient
  , f = require('util').format;

function connectCallback(err, db) {
  var col = db.collection('t');

  setInterval(function() {
    col.insert({a:1}, function(err, r) {
      console.log("insert")
      console.log(err)

      col.findOne({}, function(err, doc) {
        console.log("findOne")
        console.log(err)
      });
    })
  }, 1000)
}
var options = { server: { reconnectTries: 2000,reconnectInterval: 1000 }} 
MongoClient.connect('mongodb://localhost:27017/test',options,connectCallback);

2nd argument can be used to pass server options.