Install Xcache and Memcached on the LAMP platform to accelerate website operation

Install Xcache and Memcached on the LAMP platform to accelerate website operation

After the LAMP environment is set up in CentOS 7, you can install website programs. The most popular Wordpess is used as an example. To speed up Website access, in addition to spending money to buy better hardware. We can optimize website programs and themes. Enable the cache function for the server to speed up the website. We know that the cache on the internet is king.

Build a LAMP platform environment in CentOS 7

1. install php accelerator Xcache

XCache is a fast and stable PHP opcode cache developed by Chinese people. It reduces server load by sharing the compiled memory.

Because the yum source Warehouse does not exist, download the source file first. The latest version is 3.2.0.

Download: wget http://xcache.lighttpd.net/pub/Releases/3.2.0/xcache-3.2.0.tar.gz in the tmp directory: cd/tmp

Decompression: tar xvfz xcache-3.2.0.tar.gz

Prepare installation: cd xcache-3.2.0

Before installation, prepare the compiling environment: yum-y install php-devel gcc

Run phpize, which is very important: phpize

Configuration:./configure -- enable-xcache

Install: make & make install

Copy the configuration file cp xcache. ini/etc/php. d (xcache. ini is in the installation directory of the source program)

Restart the http service: systemctl restart httpd

2. Install memcached

Memcached is a high-performance distributed memory object Cache System for dynamic Web applications to reduce database load. It caches data and objects in the memory to reduce the number of times the database is read, so as to provide dynamic, database-driven website speed.

A. Install

Yum-y install memcached

Install memcache and associate php

Yum-y install php-pecl-memcache

Compile and install PHP memcache extensions

Download wget http://pecl.php.net/get/memcache-3.0.8.tgz

Tar xf memcache-3.0.8.tgz

Cd memcache-3.0.8

Run

Phpize

./Configure

Make & make install

B. Configuration

Add memcache extension to the php. ini file

Extension =/usr/lib64/php/modules/memcache. so (versions may vary with Directories)

C. Run

Memcached-d-m 128-c 1024-P/tmp/memcached. pid

D. Test

Test whether memcached works normally. edit a file such as memtest. php In the website directory and put the following code:

<? Php

$ Memcache = new Memcache;

$ Memcache-> connect ('localhost', 11211) or die ("cocould not connect ");

$ Version = $ memcache-> getVersion ();

Echo "Server's version:". $ version. "<br/> \ n ";

$ Tmp_object = new stdClass;

$ Tmp_object-> str_attr = 'test ';

$ Tmp_object-> int_attr = 123;

$ Memcache-> set ('key', $ tmp_object, false, 10) or die ("Failed to save data at the server ");

Echo "Store data in the cache (data will expire in 10 seconds) <br/> \ n ";

$ Get_result = $ memcache-> get ('key ');

Echo "Data from the cache: <br/> \ n ";

Var_dump ($ get_result );

?>

If the actual server version: 1.4 ...... Store date in the cache and other information indicates that memcached runs normally.

5. Integration

Wordpress supports memcached

Download: wget https://downloads.wordpress.org/plugin/memcached.2.0.2.zip

Unzip memcached.2.0.2.zip

Cd memcached.2.0.2

Copy the object-cache.php to the wp-content folder in the root directory of the website, and wordpress automatically calls the cache.

Restart the server:

Sytemctl restart memcached

Sytemctl restart httpd

3. Enable Gzip compression.

By default, the gzip module is added to apache2.4. We need to enable the deflate module at the same time to compress web files and increase the server browsing speed.

Vim/etc/httpd/conf/httpd. conf Add the following lines at the end:

<IfModule mod_deflate.c>

DeflateCompressionLevel 9

AddOutputFilterByType DEFLATE text/html text/plain text/xml application/x-httpd-php

AddOutputFilter DEFLATE css js

</IfModule>

Restart the http service: systemctl restart httpd

Memcached installation and startup script

Performance problems of using Memcached in PHP

Install Memcached in Ubuntu and its command explanation

Install and apply Memcached

Use Nginx + Memcached's small image storage solution

Getting started with Memcached

For details about Memcached, click here
Memcached: click here

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