Application memcached of the cache server in Linux

Memcached, an application of the cache server in Linux, is an enterprise application in Linux. For details, refer to the following section. I. environment requirements
Installing Memcached requires the support of the libevent library. Therefore, check whether libevent is installed before installing Memcached. The test environment also requires the support of PHP. This article assumes that PHP has been installed in the/usr/local/php Directory, that is, when compiling PHP, use the perfix parameter to specify the directory (-- prefix =/usr/local/php)

2. Download related software
Memcached: http://www.danga.com/memcached/
Memcache PHP module: http://pecl.php.net/package/memcache libevent: http://www.monkey.org /~ Provos/libevent/

No problem with downloading the latest software.

3. Install software
1. Install libevent
# Tar libevent-1.2.tar.gz
# Cd libevent-1.2
#./Configure -- prefix =/usr/local/libevent
# Ln-s/usr/local/libevent/lib/libevent-1.2.so.1/usr/lib
It is required to connect the symbol to memcache.

2. Install memcached
# Tar-zxvf memcached-1.2.0.tar.gz
# Cd memcached-1.2.0
#./Configure -- prefix =/usr/local/memcached
# Make
# Make install

Start memcached
/Usr/local/memcached/bin/memcached-d-m 20-p 11211-u apache
To enable Automatic startup, add a line in/etc/rc. d/rc. local.

3. Install the memcache PHP Module
# Tar-zxvf memcache-2.1.0.tgz
# Cd memcache-2.1.0 // ls found only a few files
#/Usr/local/php/bin/phpize // After compilation, many files are found, with more configure files
#./Configure -- enable-memcache -- with-php-config =/usr/local/php/bin/php-config -- with-zlib-dir
# Make
# Make install
Prompt:
Installing shared extensions:/usr/local/php/lib/php/extensions/no-debug-non-zts-20020429/

4. Modify php. ini
If php is not specified during php installation. you can use the phpinfo function of php to check the position of the ini, and then modify the corresponding php. ini, which is under/usr/local/php by default, but this file does not exist below, So copy it to the original file.
Cp php. ini-recommended/usr/local/php. ini

Remember this, modify php. ini, and

Extension_dir = "./"

Change

Extension_dir =/usr/local/php/lib/php/extensions/no-debug-non-zts-20020429 /"

Add a row

Extension = memcache. so

5. Check whether the test is successful.
Restart apache and write a test code.
$ Memcache = new Memcache; // create a memcache object
$ Memcache-> connect ('localhost', 11211) or die ("cocould not connect"); // connect to the Memcached Server
$ Memcache-> set ('key', 'test ');
// Set a variable to the memory. The name is key and the value is test.
$ Get_value = keys $ memcache-> get ('key'); // retrieves the key value from the memory.
Echo response $ get_value;
?>

If "test" is displayed, the installation is successful. If an error is reported, reinstall it!