Node.js crashing automatically by mysql without any operation in it

I am working with node.js and facing a problem with crashing of node . Error message shown below.

Error: Connection lost: The server closed the connection.
   at Protocol.end (/var/www/versions/project/js/node_modules/mysql/lib/protocol/Protocol.js:78:13)
   at Socket.<anonymous> (/var/www/versions/project/js/node_modules/mysql/lib/Connection.js:81:28)
   at Socket.EventEmitter.emit (events.js:117:20)
   at _stream_readable.js:919:16
   at process._tickCallback (node.js:419:13)

I'm using mysql queries in node server..but at crashing time it does not have any operation on it... node crashing automatically different period of time.

this is an error from nodejs mysql. "Connection lost, server closed the connection". mysql server has closed the connection created.

i can't be so sure about the way you use mysql connection, you did not provided sample code snippet.

one way to solve this problem is to re create a new connection when the server close old connection, example code provided

    connection.on('error', function(error) {
        if(erroor.code === 'PROTOCOL_CONNECTION_LOST') { 
          //re create the connection here again
          connection = mysql.createConnection(config);
        } else {                                      
          throw err;                                  
        }
      });
    }

I have found that working with connection pools to grab a connection only when you need it is the best approach.

// do this once
var pool = mysql.createPool( opts );

// then, just before you need a connection do this
pool.getConnection(function(err, connection) {
    if (err) throw err;

    // use the connection

    // don't forget to release the connection when you are done...
    connection.release();
});