我正在比较 node.js 与 PHP 在对 MySQL 数据库的写入性能方面。我在虚拟机中使用 Apache Benchmark、linux Mint、最新的 mysql-server(5.5.43) 和带有 node.js 的 MySQL 驱动程序 from here . 我使用的代码是

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/');

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 到带有 index.php 文件的 Apache2 服务器

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

PHP MySQL 写入性能

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

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

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

node.js MySQL 写入性能

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 数据库操作方面胜过 PHP。所以令我惊讶的是，无论我尝试哪种 SQL 语句(也尝试过 SELECT * FROM Persons)，node.js 的结果都更糟。

不仅如此，当并发​​级别为 100 时， Node 会记录大量“执行查询时出错”。向控制台发送消息，并且 1000 个请求中只有约 500 个被写入数据库。 mysql Node 驱动程序有那么糟糕还是我在这里做错了什么？非常感谢您的帮助:)

谢谢

最佳答案

首先你没有完成 server.js 代码。存在与数据库打开的连接过多的错误。为了解决这个问题，我使用了 connectionPool。其次，Apache 使用 worker 并行运行同一脚本的多个副本。

现在以 Apache + PHP + MySQL (XAMP) 的结果作为引用点:

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/');

Node + 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 个 Apache 工作人员的一个 Node 进程。如果我将簇添加到等式中会发生什么？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 Node 工作器结果:

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

出于好奇，我为具有 10 个 worker 的 Node 添加了结果:

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

我的笔记本是 Core2Duo T6600，Ubuntu 14.04.3，php 5.5.9，node 0.10.37，mysql 5.5.44

关于php - node.js MySQL 性能，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30014256/