What is the difference between mysql.createConnection and mysql.createPool in MySQL Node.js module?

Question

I'm trying to understand the difference between

mysql.createConnection

var mysql = require('mysql');

var connection = mysql.createConnection({
  host     : 'example.org',
  user     : 'bob',
  password : 'secret'
});

and

mysql.createPool

var mysql = require('mysql');

var pool  = mysql.createPool({
  connectionLimit : 10,
  host            : 'example.org',
  user            : 'bob',
  password        : 'secret' 
});

in the mysql module for Node.js.

I am already familiar with mysql.createConection . Apparently this is the default way to establish a connection to MySQL.

What exactly does mysql.createPool do?

When will I start using mysql.createPool?

What are the benefits of using mysql.createPool rather than mysql.createConnection ?

Answer 1

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