query inside forEach loop is running only a few times

I am inserting objects from an array of object as follows:

    var sql = 'INSERT INTO my_table SET ?';
    arr.forEach(item => {
      con.query(sql, item, function (err, result) { 
        if (err) throw err;
        console.log("1 record inserted");
      });
    })

The arr has around 80 items but the above code only be able to insert around 45 objects or so. Why does this happen? are there any other workarounds?

[sidorares]

It’s actually opposite - single connection buffers query commands and they are inserted sequentially ( mysql protocol only allows one active command at a time in a given connection ), and in case of a pool you make inserts in parallel

[Nithur-M]

Ok, got it. Thanks for this nice info. I am actually inserting it into a database from a cron job. Would it be the reason for the connection being killed??