我在比较MySQL数据库的写性能方面比较了node.js和PHP.我正在使用Apache Benchmark,虚拟机中的linux Mint,最新的mysql-server(5.5.43)和带有node.js from here的MySQL驱动程序.
我用的代码是

server.js

var http = require('http');
var mysql = require('mysql');
var server = http.createServer(function (req, res) {

var connection = mysql.createConnection({
    host     : 'localhost',
    user     : 'root',
    password : 'root',
    database : 'testDB'
});

connection.connect();
connection.query("INSERT INTO Persons (LastName, FirstName, Address, City) VALUES ('Futterkiste', 'Alfreds', 'Obere Str. 57', 'Berlin')", function(err, rows, fields) {
    if (!err)
        console.log('The solution is: ', rows);
    else
        console.log('Error while performing Query.');
});

connection.end();

res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World');
});

server.listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

的index.php
    

$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "testDB";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $sql = "INSERT INTO Persons (LastName, FirstName, Address, City) VALUES ('Futterkiste', 'Alfreds', 'Obere Str. 57', 'Berlin')";
    // use exec() because no results are returned
    $conn->exec($sql);
    echo "New record created successfully";
    }
catch(PDOException $e)
    {
    echo $sql . "<br>" . $e->getMessage();
    }

$conn = null;
echo "Hello world";
?>

Apache Benchmark到Apache2服务器的index.php文件

ab -n 1000 -c 100 http://localhost/

PHP MySQL写性能

Concurrency Level:      100
Time taken for tests:   1.328 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      230000 bytes
HTML transferred:       43000 bytes
Requests per second:    752.99 [#/sec] (mean)
Time per request:       132.804 [ms] (mean)
Time per request:       1.328 [ms] (mean, across all concurrent requests)
Transfer rate:          169.13 [Kbytes/sec] received

Apache Benchmark到server.js文件中的node.js服务器

ab -n 1000 -c 100 http://localhost:1337/

node.js MySQL写性能

Concurrency Level:      100
Time taken for tests:   3.896 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      113000 bytes
HTML transferred:       12000 bytes
Requests per second:    256.68 [#/sec] (mean)
Time per request:       389.585 [ms] (mean)
Time per request:       3.896 [ms] (mean, across all concurrent requests)
Transfer rate:          28.33 [Kbytes/sec] received

我的印象是node.js在I / O数据库操作中优于PHP.因此,令我惊讶的是,无论我尝试哪种SQL语句(也尝试过SELECT * FROM Persons),node.js都会变得更糟.

不仅如此,而且当cuncurrency级别为100时,节点会记录大量“执行查询时出错”.消息到控制台,1000个请求中只有约500个被写入数据库. mysql节点驱动程序是不是很糟糕,或者我在这里做错了什么？我将衷心感谢您的帮助 ：)

谢谢

解决方法:

首先,你没有完成server.js代码.有一个错误,连接到DB的连接太多了.为了解决这个问题,我使用了connectionPool.第二个Apache使用worker来并行运行同一脚本的许多副本.

现在Apache PHP MySQL(XAMP)的结果作为参考点：

Concurrency Level:      100
Time taken for tests:   7.476 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      230000 bytes
HTML transferred:       42000 bytes
Requests per second:    133.77 [#/sec] (mean)
Time per request:       747.557 [ms] (mean)
Time per request:       7.476 [ms] (mean, across all concurrent requests)
Transfer rate:          30.05 [Kbytes/sec] received

现在等于我修复server.js的机会

var http = require('http');
var mysql = require('mysql');
var connection = mysql.createPool({
    connectionLimit: 10,
    host     : 'localhost',
    user     : 'test',
    password : 'test',
    database : 'testDB'
});
var server = http.createServer(function (req, res) {
    connection.query("INSERT INTO Persons (LastName, FirstName, Address, City) VALUES ('Futterkiste', 'Alfreds', 'Obere Str. 57', 'Berlin')", function(err, rows, fields) {
        if (!err)
            console.log('The solution is: ', rows);
        else {
            console.log('Error while performing Query.');
        }
        res.writeHead(200, {'Content-Type': 'text/plain'});
        res.end('Hello World');
    });
});
server.listen(1337, '127.0.0.1');
server.on('close', function() {
    connection.end();
})
console.log('Server running at http://127.0.0.1:1337/');

和节点MySQL的结果：

Concurrency Level:      100
Time taken for tests:   7.289 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      112000 bytes
HTML transferred:       11000 bytes
Requests per second:    137.19 [#/sec] (mean)
Time per request:       728.899 [ms] (mean)
Time per request:       7.289 [ms] (mean, across all concurrent requests)
Transfer rate:          15.01 [Kbytes/sec] received

如您所见,结果非常接近.但这是针对11名Apache工作者的一个节点进程.如果我在方程式中添加聚类会发生什么？这是修改后的代码：

var http = require('http');
var mysql = require('mysql');
var cluster = require('cluster');

if (cluster.isMaster) {
    cluster.fork();
    cluster.fork();
    cluster.fork();
    cluster.fork();
} else {
    var connection = mysql.createPool({
        connectionLimit: 10,
        host     : 'localhost',
        user     : 'test',
        password : 'test',
        database : 'testDB'
    });
    var server = http.createServer(function (req, res) {
        connection.query("INSERT INTO Persons (LastName, FirstName, Address, City) VALUES ('Futterkiste', 'Alfreds', 'Obere Str. 57', 'Berlin')", function(err, rows, fields) {
            if (!err)
                console.log('The solution is: ', rows);
            else {
                console.log('Error while performing Query.');
            }
            res.writeHead(200, {'Content-Type': 'text/plain'});
            res.end('Hello World');
        });
    });

    server.listen(1337, '127.0.0.1');
    server.on('close', function() {
        connection.end();
    })
    console.log('Server running at http://127.0.0.1:1337/ worker:' + cluster.worker.id);
}

四个节点工人的结果：

Concurrency Level:      100
Time taken for tests:   2.782 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      112000 bytes
HTML transferred:       11000 bytes
Requests per second:    359.48 [#/sec] (mean)
Time per request:       278.179 [ms] (mean)
Time per request:       2.782 [ms] (mean, across all concurrent requests)
Transfer rate:          39.32 [Kbytes/sec] received

为了好奇,我为10名工人添加了节点的结果：

Concurrency Level:      100
Time taken for tests:   2.647 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      112000 bytes
HTML transferred:       11000 bytes
Requests per second:    377.84 [#/sec] (mean)
Time per request:       264.665 [ms] (mean)
Time per request:       2.647 [ms] (mean, across all concurrent requests)
Transfer rate:          41.33 [Kbytes/sec] received

我的笔记本电脑是Core2Duo T6600,Ubuntu 14.04.3,php 5.5.9,节点0.10.37,mysql 5.5.44