mysql.query doesnt work if i set a sleep ¿?

[Jesús TT]

Hi friends of the group!
I am mad with this issue.

I cant save in DB with connection.query() if I set a while with a pause.
Its very strange.
Any idea?
Thanks !


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//npm install mysql
var mysql = require('mysql');


var connection = mysql.createConnection({
   host: 'localhost',
   user: 'myUser',
   password: '******',
   database: 'myDB',
   port: 3306
});
connection.connect(function(error){
   if(error){throw error;}else{console.log('Conected to mySQL');}
});


//LOOP//
while(true){    
    console.log("Loop!");
    save_bd();
    sleepFor(1000); //<------------- If remove this line the data is saved in the DB each while loop ¿¿??////////////////
}




//FUNCTIONS//
function save_bd(){
    connection.query("UPDATE myTable SET myTime='"+new Date().getTime()+"' WHERE Id='1'", function(errors, rowss){
    if(errors){ throw errors;}else{  
        console.log("Why not Saved?");
    }});//END query_read_data
}
function sleepFor( sleepDuration ){
    var now = new Date().getTime();
    while(new Date().getTime() < now + sleepDuration){ /* do nothing */ }
}