Nodejs mysql pool使用实例

前段时间在写一个版本发布工具，用到express+mysql实现，当站点运行很长一段空白时间后，node进程会自动down掉，提示mysql连接错误，谷歌后发现是mysql自身的特性导致，因此后来改为mysql pool连解决次问题！

mysql模块为felixge/node-mysql

源码如下：

/**

 * Created by kevalin on 2015/4/22.

 */

var express = require('express');

var router = express.Router();

var mysql = require('mysql');

var conf = require('../config/dbconnection');



//定义pool池

var pool = mysql.createPool(

    {

        host        : conf.dbMysql.host,

        user        : conf.dbMysql.user,

        password    : conf.dbMysql.password,

        database    : conf.dbMysql.database,

        port        : conf.dbMysql.port

    }

);



router.get('/', function(req, res) {

    var selectSites = "select *, date_format(do_time, '%Y-%m-%d %H:%i:%s') as time from siteinfo order by id";

    pool.getConnection(function(err, connection) {

        if (err) throw err;

        connection.query(selectSites, function(err, rows) {

            if (err) throw  err;

            res.render('sites', {title : '站点分布', results : rows})

        });

        //回收pool

        connection.release();

    });

});



module.exports = router;