node.js的generic-pool与mysql结合，mysql连接池

var generic_pool = require('generic-pool');
var pool = generic_pool.Pool({
    name: 'mysql',
    max: 10,
    create: function(callback) {
        var Client = require('mysql').createConnection({
            host:'127.0.0.1',
 
            user:'root',
 
            password:'123456',
 
            database: 'weibo_gs'
 
        });
        callback(null,Client);
    },
    destroy: function(db) {
        db.disconnect();
    }
});
 
pool.acquire(function(err, client) {
    if (err) {
        // handle error - this is generally the err from your
 
        // factory.create function  
    }
    else {
        client.query("select * from gs_scrapy", [], function(err,data) {
            console.log(data);
            // return object back to pool
            pool.release(client);
        });
    }
});