Initial successfull connecction callback for connecton pooling (DOCS update)

Hi

var mysql      = require('mysql');
var connection = mysql.createConnection({
  host     : 'example.org',
  user     : 'bob',
  password : 'secret'
});
 
connection.connect(function(err) {
  if (err) {
    console.error('error connecting: ' + err.stack);
    return;
  }
 
  console.log('connected as id ' + connection.threadId);
});

with the above code for connections creation we can print successfully connected message initially to indicate the the db is connected

How to do the same when we create a new pool and want to know that the server successfully connected before executing any queries …

var mysql = require('mysql');
var pool  = mysql.createPool(...);
 

how to print the initial connected to db message with this…

If there is a way please add it to docs, it will be very useful indicate the successful db connection.

Thank You !

[dougwilson]

You could execute a query, or even just call getConnection and then release it back if you want. Usually checking that on start is a bit of an antipattern, though, as it can stop connecting right at any point after your app started.

[dougwilson]

The pool will emit a connection event when a new connection is made within the pool. Creating the pool won’t create a connection until you ask it for a connection.