Installing memcached on Centos
Install memcached.
yum install memcached
Open config file /etc/sysconfig/memcached and make sure you have only your machine allowed to connect to port 11211. File must look like below:
PORT="11211" USER="memcached" MAXCONN="1024" CACHESIZE="64" OPTIONS="-l 127.0.0.1"
Add to php.ini:
extension = "memcache.so"
Start memcached:
service memcached start
Restart Apache
service httpd restart