node.js MySQL performance

Question

我正在将node.js与PHP相比，就写入性能与mySQL数据库进行比较。我正在使用Node.js使用Apache Benchmark，Virtual Machine中的Linux Mint，最新的MySQL-Server（5.5.43）和驱动程序。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基准标准使用index.php文件

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

php mysql写作

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至node.js server in server.js file

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

node.js mysql写绩效

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

i的印象是Node.js在I/O数据库操作中的表现优于PHP。因此，让我感到惊讶的是，无论我尝试哪种SQL语句（也尝试从人中选择 *）node.js结果更糟。

不仅如此，而且当cuncurrency级别为100时，节点还会记录大量的"执行查询时错误"。给控制台的消息，1000个请求中只有约500个被写入数据库。MySQL节点驱动程序只是很糟糕，还是我在这里做错了什么？我真的很感谢您的帮助：）

谢谢

Answer 1

首先您未完成server.js代码。有一个错误，与DB打开了太多连接。为了解决此问题，我使用了ConnectionPool。第二个Apache使用工人并行运行许多同一脚本的副本。

现在，Apache PHP MySQL（XAMP）作为参考点的结果：

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

现在要等于我修复了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

您可以看到结果非常接近。但这是针对11名Apache工人的一个节点过程。如果我将簇添加到方程式中会怎样？这是修改的代码：

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

对于好奇心，我添加了10名工人的节点的结果：

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