WordPress使用Redis加速网站

April 14, 2017Comments

一、安装redis：

wget http://download.redis.io/releases/redis-3.2.0.tar.gz
tar -zxf redis-3.2.0.tar.gz
cd redis-3.2.0/
make MALLOC=jemalloc
make PREFIX=/byrd/service/redis-3.2.0 install
ln -s /byrd/service/redis-3.2.0 /usr/local/redis
mkdir /usr/local/redis/etc
cp redis.conf /usr/local/redis/etc/
sysctl -w vm.overcommit_memory=1
echo "512" > /proc/sys/net/core/somaxconn
/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf &

wget http://download.redis.io/releases/redis-3.2.0.tar.gz

tar -zxf redis-3.2.0.tar.gz

cd redis-3.2.0/

make MALLOC=jemalloc

make PREFIX=/byrd/service/redis-3.2.0 install

ln -s /byrd/service/redis-3.2.0 /usr/local/redis

mkdir /usr/local/redis/etc

cp redis.conf /usr/local/redis/etc/

sysctl -w vm.overcommit_memory=1

echo "512" > /proc/sys/net/core/somaxconn

/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf &

二、调用Predis：

I recommend Predis. Upload predis.php to the WordPress root directory. See more about Predis on Github (if you use a newer version of Predis you need also to modify the script below).文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-MySQL/

点击下载Predis.php代码

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链接: http://pan.baidu.com/s/1i4Ie2Tf 密码: a8mn

文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

三、Installing the PHP script for the Frontend Cache：

展示index-with-redis.php代码

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<?php
/*
    Author: Jim Westergren & Jeedo Aquino
    File: index-with-redis.php
    Updated: 2012-10-25
    This is a redis caching system for wordpress.
    see more here: www.jimwestergren.com/wordpress-with-redis-as-a-frontend-cache/
    Originally written by Jim Westergren but improved by Jeedo Aquino.
    some caching mechanics are different from jim's script which is summarized below:
    - cached pages do not expire not unless explicitly deleted or reset
    - appending a ?c=y to a url deletes the entire cache of the domain, only works when you are logged in
    - appending a ?r=y to a url deletes the cache of that url
    - submitting a comment deletes the cache of that page
    - refreshing (f5) a page deletes the cache of that page
    - includes a debug mode, stats are displayed at the bottom most part after </html>
    for setup and configuration see more here:
    www.jeedo.net/lightning-fast-wordpress-with-nginx-redis/
    use this script at your own risk. i currently use this albeit a slightly modified version
    to display a redis badge whenever a cache is displayed.
*/
// change vars here
$cf = 1;			// set to 1 if you are using cloudflare
$debug = 0;			// set to 1 if you wish to see execution time and cache actions
$display_powered_by_redis = 1;  // set to 1 if you want to display a powered by redis message with execution time, see below
$start = microtime();   // start timing page exec
// if cloudflare is enabled
if ($cf) {
    if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
        $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
    }
}
// from wp
define('WP_USE_THEMES', true);
// init predis
include("predis.php");
$redis = new Predis\Client('');
// init vars
$domain = $_SERVER['HTTP_HOST'];
$url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$url = str_replace('?r=y', '', $url);
$url = str_replace('?c=y', '', $url);
$dkey = md5($domain);
$ukey = md5($url);
// check if page isn't a comment submission
(isset($_SERVER['HTTP_CACHE_CONTROL']) && $_SERVER['HTTP_CACHE_CONTROL'] == 'max-age=0') ? $submit = 1 : $submit = 0;
// check if logged in to wp
$cookie = var_export($_COOKIE, true);
$loggedin = preg_match("/wordpress_logged_in/", $cookie);
// check if a cache of the page exists
if ($redis->hexists($dkey, $ukey) && !$loggedin && !$submit && !strpos($url, '/feed/')) {
    echo $redis->hget($dkey, $ukey);
    $cached = 1;
    $msg = 'this is a cache';
// if a comment was submitted or clear page cache request was made delete cache of page
} else if ($submit || substr($_SERVER['REQUEST_URI'], -4) == '?r=y') {
    require('./wp-blog-header.php');
    $redis->hdel($dkey, $ukey);
    $msg = 'cache of page deleted';
// delete entire cache, works only if logged in
} else if ($loggedin && substr($_SERVER['REQUEST_URI'], -4) == '?c=y') {
    require('./wp-blog-header.php');
    if ($redis->exists($dkey)) {
        $redis->del($dkey);
        $msg = 'domain cache flushed';
    } else {
        $msg = 'no cache to flush';
    }
// if logged in don't cache anything
} else if ($loggedin) {
    require('./wp-blog-header.php');
    $msg = 'not cached';
// cache the page
} else {
    // turn on output buffering
    ob_start();
    require('./wp-blog-header.php');
    // get contents of output buffer
    $html = ob_get_contents();
    // clean output buffer
    ob_end_clean();
    echo $html;
    // Store to cache only if the page exist and is not a search result.
    if (!is_404() && !is_search()) {
        // store html contents to redis cache
        $redis->hset($dkey, $ukey, $html);
        $msg = 'cache is set';
    }
}
$end = microtime(); // get end execution time
// show messages if debug is enabled
if ($debug) {
    echo $msg.': ';
    echo t_exec($start, $end);
}
if ($cached && $display_powered_by_redis) {
	// You should move this CSS to your CSS file and change the: float:right;margin:20px 0;
	echo "<style>#redis_powered{float:right;margin:20px 0;background:url(http://images.staticjw.com/jim/3959/redis.png) 10px no-repeat #fff;border:1px solid #D7D8DF;padding:10px;width:190px;}
	#redis_powered div{width:190px;text-align:right;font:10px/11px arial,sans-serif;color:#000;}</style>";
	echo "<a href=\"https://note.t4x.org/\" style=\"text-decoration:none;\"><div id=\"redis_powered\"><div>Page generated in<br/> ".t_exec($start, $end)." sec</div></div></a>";
}
// time diff
function t_exec($start, $end) {
    $t = (getmicrotime($end) - getmicrotime($start));
    return round($t,5);
}
// get time
function getmicrotime($t) {
    list($usec, $sec) = explode(" ",$t);
    return ((float)$usec + (float)$sec);
}
?>

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<?php

Author: Jim Westergren & Jeedo Aquino

File: index-with-redis.php

Updated: 2012-10-25

This is a redis caching system for wordpress.

see more here: www.jimwestergren.com/wordpress-with-redis-as-a-frontend-cache/

Originally written by Jim Westergren but improved by Jeedo Aquino.

some caching mechanics are different from jim's script which is summarized below:

- cached pages do not expire not unless explicitly deleted or reset

- appending a ?c=y to a url deletes the entire cache of the domain, only works when you are logged in

- appending a ?r=y to a url deletes the cache of that url

- submitting a comment deletes the cache of that page

- refreshing (f5) a page deletes the cache of that page

- includes a debug mode, stats are displayed at the bottom most part after </html>

for setup and configuration see more here:

www.jeedo.net/lightning-fast-wordpress-with-nginx-redis/

use this script at your own risk. i currently use this albeit a slightly modified version

to display a redis badge whenever a cache is displayed.

// change vars here

$cf = 1; // set to 1 if you are using cloudflare

$debug = 0; // set to 1 if you wish to see execution time and cache actions

$display_powered_by_redis = 1; // set to 1 if you want to display a powered by redis message with execution time, see below

$start = microtime(); // start timing page exec

// if cloudflare is enabled

if ($cf) {

if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {

$_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];

}

// from wp

define('WP_USE_THEMES', true);

// init predis

include("predis.php");

$redis = new Predis\Client('');

// init vars

$domain = $_SERVER['HTTP_HOST'];

$url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

$url = str_replace('?r=y', '', $url);

$url = str_replace('?c=y', '', $url);

$dkey = md5($domain);

$ukey = md5($url);

// check if page isn't a comment submission

(isset($_SERVER['HTTP_CACHE_CONTROL']) && $_SERVER['HTTP_CACHE_CONTROL'] == 'max-age=0') ? $submit = 1 : $submit = 0;

// check if logged in to wp

$cookie = var_export($_COOKIE, true);

$loggedin = preg_match("/wordpress_logged_in/", $cookie);

// check if a cache of the page exists

if ($redis->hexists($dkey, $ukey) && !$loggedin && !$submit && !strpos($url, '/feed/')) {

echo $redis->hget($dkey, $ukey);

$cached = 1;

$msg = 'this is a cache';

// if a comment was submitted or clear page cache request was made delete cache of page

} else if ($submit || substr($_SERVER['REQUEST_URI'], -4) == '?r=y') {

require('./wp-blog-header.php');

$redis->hdel($dkey, $ukey);

$msg = 'cache of page deleted';

// delete entire cache, works only if logged in

} else if ($loggedin && substr($_SERVER['REQUEST_URI'], -4) == '?c=y') {

require('./wp-blog-header.php');

if ($redis->exists($dkey)) {

$redis->del($dkey);

$msg = 'domain cache flushed';

} else {

$msg = 'no cache to flush';

}

// if logged in don't cache anything

} else if ($loggedin) {

require('./wp-blog-header.php');

$msg = 'not cached';

// cache the page

} else {

// turn on output buffering

ob_start();

require('./wp-blog-header.php');

// get contents of output buffer

$html = ob_get_contents();

// clean output buffer

ob_end_clean();

echo $html;

// Store to cache only if the page exist and is not a search result.

if (!is_404() && !is_search()) {

// store html contents to redis cache

$redis->hset($dkey, $ukey, $html);

$msg = 'cache is set';

}

$end = microtime(); // get end execution time

// show messages if debug is enabled

if ($debug) {

echo $msg.': ';

echo t_exec($start, $end);

}

if ($cached && $display_powered_by_redis) {

// You should move this CSS to your CSS file and change the: float:right;margin:20px 0;

echo "<style>#redis_powered{float:right;margin:20px 0;background:url(http://images.staticjw.com/jim/3959/redis.png) 10px no-repeat #fff;border:1px solid #D7D8DF;padding:10px;width:190px;}

#redis_powered div{width:190px;text-align:right;font:10px/11px arial,sans-serif;color:#000;}</style>";

echo "<a href=\"https://note.t4x.org/\" style=\"text-decoration:none;\"><div id=\"redis_powered\"><div>Page generated in<br/> ".t_exec($start, $end)." sec</div></div></a>";

}

// time diff

function t_exec($start, $end) {

$t = (getmicrotime($end) - getmicrotime($start));

return round($t,5);

}

// get time

function getmicrotime($t) {

list($usec, $sec) = explode(" ",$t);

return ((float)$usec + (float)$sec);

}

文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

四、执行步骤

①：安装+运行redis；
②：下载predis.php到wordpress根目录；
③：index-with-redis.php改名为index.php；
④：链接: http://pan.baidu.com/s/1i4Ie2Tf 密码: a8mn 文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

五、结果对比

未安装：

[root@Test ~]# siege -t 1m -c 100 http://blog.t4x.org/project/centos-install-extmail/
** SIEGE 3.1.3
** Preparing 100 concurrent users for battle.
The server is now under siege...
HTTP/1.1 200 2.18 secs: 201035 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 2.34 secs: 201038 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 44.08 secs: 202281 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 43.93 secs: 202281 bytes ==> GET /project/centos-install-extmail/

Lifting the server siege... done.

Transactions:                    131 hits
Availability:                 100.00 %
Elapsed time:                  59.62 secs
Data transferred:              25.15 MB
Response time:                 27.93 secs
Transaction rate:               2.20 trans/sec
Throughput:                     0.42 MB/sec
Concurrency:                   61.36
Successful transactions:         131
Failed transactions:               0
Longest transaction:           45.13
Shortest transaction:           1.44

[root@Web3 ~]# cat /var/log/mysqld.log | wc -l
22594

[root@Test ~]# siege -t 1m -c 100 http://blog.t4x.org/project/centos-install-extmail/

** SIEGE 3.1.3

** Preparing 100 concurrent users for battle.

The server is now under siege...

HTTP/1.1 200 2.18 secs: 201035 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 2.34 secs: 201038 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 44.08 secs: 202281 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 43.93 secs: 202281 bytes ==> GET /project/centos-install-extmail/

Lifting the server siege... done.

Transactions: 131 hits

Availability: 100.00 %

Elapsed time: 59.62 secs

Data transferred: 25.15 MB

Response time: 27.93 secs

Transaction rate: 2.20 trans/sec

Throughput: 0.42 MB/sec

Concurrency: 61.36

Successful transactions: 131

Failed transactions: 0

Longest transaction: 45.13

Shortest transaction: 1.44

[root@Web3 ~]# cat /var/log/mysqld.log | wc -l

22594

安装后：

[root@Test ~]# siege -t 1m -c 100 http://blog.t4x.org/project/centos-install-extmail/
** SIEGE 3.1.3
** Preparing 100 concurrent users for battle.
The server is now under siege...
HTTP/1.1 200 0.11 secs: 201224 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 0.12 secs: 201224 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 0.80 secs: 201224 bytes ==> GET /project/centos-install-extmail/
HTTP/1.1 200 0.78 secs: 201224 bytes ==> GET /project/centos-install-extmail/

Lifting the server siege... done.

Transactions:                   4022 hits
Availability:                 100.00 %
Elapsed time:                  59.57 secs
Data transferred:             771.83 MB
Response time:                  0.97 secs
Transaction rate:              67.52 trans/sec
Throughput:                    12.96 MB/sec
Concurrency:                   65.65
Successful transactions:        4022
Failed transactions:               0
Longest transaction:            4.01
Shortest transaction:           0.73
[root@Web2 ~]# cat /var/log/mysqld.log |wc -l
543

[root@Test ~]# siege -t 1m -c 100 http://blog.t4x.org/project/centos-install-extmail/

** SIEGE 3.1.3

** Preparing 100 concurrent users for battle.

The server is now under siege...

HTTP/1.1 200 0.11 secs: 201224 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 0.12 secs: 201224 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 0.80 secs: 201224 bytes ==> GET /project/centos-install-extmail/

HTTP/1.1 200 0.78 secs: 201224 bytes ==> GET /project/centos-install-extmail/

Lifting the server siege... done.

Transactions: 4022 hits

Availability: 100.00 %

Elapsed time: 59.57 secs

Data transferred: 771.83 MB

Response time: 0.97 secs

Transaction rate: 67.52 trans/sec

Throughput: 12.96 MB/sec

Concurrency: 65.65

Successful transactions: 4022

Failed transactions: 0

Longest transaction: 4.01

Shortest transaction: 0.73

[root@Web2 ~]# cat /var/log/mysqld.log |wc -l

543

文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

六、测试说明

未开启redis的时候，每次请求网站的时候都会请求mysql，而开启redis后，第一次请求会请求到后端的mysql，以后的内容都缓存到了redis中。文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

参考文档：
1：https://www.jimwestergren.com/wordpress-with-redis-as-a-frontend-cache/
2：http://www.jeedo.net/lightning-fast-wordpress-with-nginx-redis/文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/ 文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/environment/wordpress-redis-mysql/

申明：除非注明Byrd's Blog内容均为原创,未经许可禁止转载!详情请阅读版权申明!