Installing the Memcache cache

Memcache Introduction: danga.com An open source project, it is a high-performance distributed memory Object cache system

The ability to store data in a variety of formats by maintaining a unified, huge hash table in memory

* View current number of memcache connections

# Netstat-n | grep:11211 | Wc-l

* See the number of connections allowed by default, the number of 11211 port default connections set here is 40960

# cat/etc/rc.local

* How to view Memcache server-side version

#./memcached-h

* Memcache installation under Linux

# CD/USR/LOCAL/SRC

Install yum extension Source: # Yum Install-y epel-release

Memcache module: # yum install-y php-pecl-memcached

Download memcache:# wget http://www.danga.com/memcached/dist/memcached-1.2.0.tar.gz

Download libevent:# wget http://www.monkey.org/~provos/libevent-1.2.tar.gz

First load libevent:# tar zxvf libevent-1.2.tar.gz

# CD libevent-1.2

#./configure--prefix=/usr/local/libevent

# make

# make Install

* Test whether the libevent is installed successfully

# Ls-al/usr/local/libevent/lib | grep libevent

lrwxrwxrwx 1 root root Apr 13:01 libevent-1.2.so.1-libevent-1.2.so.1.0.3

-rwxr-xr-x 1 root root 264056 Apr 13:01 libevent-1.2.so.1.0.3

-rw-r--r--1 root root 430388 Apr 13:01 libevent.a

-rwxr-xr-x 1 root root 820 Apr 13:01 libevent.la

lrwxrwxrwx 1 root root Apr 13:01 libevent.so-libevent-1.2.so.1.0.3

Installing memcached # CD/USR/LOCAL/SRC

# yum Install-y libevent-devel

# tar ZXVF memcached-1.2.0.tar.gz

# CD memcached-1.2.0

#./configure--with-libevent=/usr/local/memcached

# make

# make Install

* Test for successful installation of memcached

# ls-al/usr/local/bin/mem*

-rwxr-xr-x 1 root root 113084 Apr 13:23/usr/local/bin/memcached

-rwxr-xr-x 1 root root 117439 Apr 13:23/usr/local/bin/memcached-debug

* Install PHP extensions for Memcache

1. In Http://pecl.php.net/package/memcache, select the version of memcache you want to download

2. Installing the PHP memcache extension

# tar ZXVF memcache-2.2.1.tgz

# CD memcache-2.2.1

#/usr/local/php5.6/bin/phpize

Running this command will generate a script and then compile the extension

#./configure--enable-memcache--with-php-config=/usr/local/php5.6/bin/php-config--with-zlib-dir

# make

# make Install

# Vim/usr/local/php5.6/etc/php.ini

Extension_dir = "/usr/local/php5.6/lib/php/extensions/no-debug-non-zts-20131226/"

Extension=memcache.so

* Basic settings for memcached

1) Start the server side of the Memcache

#/usr/local/bin/memcached-d-M 100-u root-l 127.0.0.1-p 12000-c 300-p/tmp/mem cached.pid

The-D option is to start a daemon,

-M is the amount of memory allocated to Memcache, in megabytes, I'm 10MB,

-U is the user running memcache, I am root here,

-L is the server IP address of the listener, if there are multiple addresses, I specify the server IP address 192.168.0.200,

-P is the port that sets Memcache listening, I set here 12000, preferably more than 1024 ports,

2) If you want to end the memcache process, execute:

# Kill ' Cat/tmp/memcached.pid '

3) Restart Apache,service httpd restart

4) memcache Environmental test

Run the following PHP file if there is an output of this is a test! It means the environment has been built successfully.

# cd/var/www/html

# Vim hjt.php

<?php

$mem = new Memcache;

$mem->connect ("127.0.0.1", 11211);

$mem->set (' key ', ' This is a test! ', 0, 60);

$val = $mem->get (' key ');

Echo $val;

?>

Installing the Memcache cache