PHP Fatal error: Uncaught exception 'Zend_Cache_Exception' with message 'The memcache extension must be loaded for using this backend !'

This issue comes when i run my application on Ubuntu. So i want to share the steps which i follow to resolve this.

First install memcached 

   $ sudo apt-get install memcached  

Second

  $ sudo apt-get install libevent*

Third

  $ sudo apt-get install php5-memcache

After this memcached automatically start. You can check with the below command

 $ service memcached status

If memcached not started then do 

$ memcached -d -m 1024 -u root -l 127.0.0.1 -p 11211

and at last restart the apache

$ sudo service apache2 restart