To connect to a mongo database from node application we require mongoose.
Installing Mongoose Go to the toot of your application and install mongoose by
npm install mongooseNext we connect to the database.
var mongoose = require('mongoose');
//connect to the test database running on default mongod port of localhost
mongoose.connect('mongodb://localhost/test');//Connecting with custom credentials
mongoose.connect('mongodb://USER:PASSWORD@HOST:PORT/DATABASE');
//Using Pool Size to define the number of connections opening
//Also you can use a call back function for error handling
mongoose.connect('mongodb://localhost:27017/consumers',
{server: { poolSize: 50 }},
function(err) {
if(err) {
console.log('error in this')
console.log(err);
// Do whatever to handle the error
} else {
console.log('Connected to the database');
}
});