nodejs集群模式下如何处理连接池

Question

I am using MySQL and creating MySQL connection pool once and reusing in all other modules where needed.

When my code is running on single core this is working fine but when I use clustering and running app on multiple cores system, my connection pool is getting initialized multiple times [Based on number of cores].

How to fix this.

mysql.init(function (error) {
    if (error) {
        throw error;
    }

    var server = http.createServer(app);
    server.listen(app.get('port'), function () {
        logger.info('Express server listening on port ' + app.get('port'));
    });
});

Answer 1

That's normal . Cluster mode means that you have a copy of your application running in each core . This process don't share memory . Are individual process. This aren't threads .