1, memcached front end data cache

1. Test the lnmp environment.

[root@lnmp nginx]# netstat -lntup|egrep "nginx|php|mysql"
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      1401/nginx          
tcp        0      0 127.0.0.1:9000              0.0.0.0:*                   LISTEN      1503/php-fpm        
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      1232/mysqld 
[root@lnmp nginx]# cat /application/nginx/html/www/index.php  
<?php
        $link_id=mysql_connect('localhost','root','000000') or mysql_error();
        if($link_id){
                echo "mysql successful by https://blog.csdn.net/liang_operations!";
        }else{
                echo mysql_error();
        }
?>
[root@Memcached ~]# curl http://10.0.0.130
mysql successful by https://blog.csdn.net/liang_operations!

2. Download and install memcache

[root@lnmp ~]# wget http://pecl.php.net/get/memcache-3.0.8.tgz
[root@lnmp ~]# tar xf memcache-3.0.8.tgz   
[root@lnmp ~]# cd memcache-3.0.8
[root@lnmp memcache-3.0.8]# /application/php/bin/phpize 
Configuring for:
PHP Api Version:         20090626
Zend Module Api No:      20090626
Zend Extension Api No:   220090626
[root@lnmp memcache-3.0.8]# ./configure --enable-memcache --with-php-config=/application/php/bin/php-config --with-zlib-dir
[root@lnmp memcache-3.0.8]# make && make install
[root@lnmp memcache-3.0.8]# ll /usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so 
-rwxr-xr-x. 1 root root 449093 Oct  7 10:54 /usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so

3. Modify php.ini configuration file

[root@lnmp memcache-3.0.8]# vi /application/php/lib/php.ini
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/"
extensio = memcache.so###increase

4. Restart nginx and php

[root@lnmp memcache-3.0.8]# pkill php-fpm              
[root@lnmp memcache-3.0.8]# php-fpm 
[root@lnmp memcache-3.0.8]# nginx -s reload

5. Write php connection memcached test

[root@Memcached ~]# netstat -lntup|grep mem
tcp        0      0 0.0.0.0:11212               0.0.0.0:*                   LISTEN      10035/memcached     
tcp        0      0 :::11212                    :::*                        LISTEN      10035/memcached  
[root@lnmp memcache-3.0.8]# cat /application/nginx/html/www/index.php 
<?php
$memcache = new Memcache;             //Create a memcache object
$memcache->connect('10.0.0.139', 11211) or die ("Could not connect"); //Connect to Memcached server
$memcache->set('key', 'test');        //Set a variable to memory. The name is key and the value is test
$get_value = $memcache->get('key');   //Get the value of key from memory
echo $get_value;
?>
[root@lnmp ~]# curl http://10.0.0.130/index.php
test

2, memcached for web session retention

1. Modify the configuration file (all web environments)

Default / application/php/lib/php.ini configuration
 Session. Save? Handler = files? In what form? The default is file.
; session.save#path = "/ tmp" ා񖓿ාා񖓿ාstorage location
 Modify / application/php/lib/php.ini
session.save_handler = memcache
session.save_path = "tcp://10.0.0.139:11212" 
Tips:
10.0.0.139:11212 is the IP and port of memcached database cache

2. restart

[root@lnmp ~]# pkill php-fpm 
[root@lnmp ~]# php-fpm