MySQL Pool

创建连接池

function SqlPool() {
    this.flag = true;//是否连接过
    this.pool = mysql.createPool({
        host : 'localhost',
        user : 'root',
        password : password,
        database : 'mydb',
        port : '3306',
    });

    this.getPool = function () {
        if(this.flag) {
            // 监听connection事件
            this.pool.on('connection', function (connection) {
                connection.query('set session auto_increment_increment=1');
                this.flag = false;
            });
        }
        return this.pool;
    };
}

使用

var SqlPool = require('./mysql');
var Pool = new SqlPool();
var pool = Pool.getPool();

pool.getConnection(function (err, conn) {
    if(err) {
        console.log(err);
        return ;
    }
    conn.query('select * from user',function (err, rs) {
        if(err) {
            console.log(err);
            return ;
        }
        for(var i = 0; i < rs.length; i++) {
            console.log('id : ' + rs[i].id);
            console.log('name : ' + rs[i].name);
            console.log('pwd : ' + rs[i].pwd);
        }
        conn.release();
    });
});
        

关闭

pool.releaseConnection(conn);