How to install Memcached on CentOS?

Memcached is very fast caching system for MySQL. It is a distributed, high-performance, in-memory caching system that is primarily used to speed up sites that make heavy use of databases.

Steps -

1. Firstly clean-up yum -
yum clean all

2. Update the packages -
yum -y update

3. Install memcached and it's related packages -
yum -y install memcached

Once done with installation we can proceed with the configuration -

1. You can fire below command to check the information of memcached command -
memcached -h

2. Configuration file path is as follow -
/etc/sysconfig/memcached

Memcached will start on port 11211 by default as per the default configuration file as follow -
PORT=”11211″
USER=”memcached”
MAXCONN=”1024″
CACHESIZE=”64″

If you want to edit the any value in file memcached file then follow below steps -
vi /etc/sysconfig/memcached

Update the value which you'd like to update and save the configuration file. 

3. Restart the memcached service -
service memcached restart 

4. Start the web server.  For Apache web server fire below command -
service httpd restart

5. Check the status of memcached -
service memcached status

6.  Stop memcached service -
service memcached stop

All done. Smile

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