The Redis object cache is the type of cache solution suitable only for object cache. This type of cache stores data from database queries into a memory for fast access of data. It works so effectively with relational databases like MySQL, etc. When WordPress page is loaded it perform database queries to retrieve information it requires some time to perform database queries and by default Redis performed to store that database queries into a memory so that the page load time slight deceases hence you will get fast page loading times. You need to follow all the details so carefully to integrate the Redis object cache on your WordPress instances.
Step-1 (Install the Redis packages)
$ sudo apt-get install redis-server php-redis
Step-2 (Check that it is working or not)
$ sudo redis-cli
Type the given command
This means Redis works. Now type
exit to exit from Redis-cli.
Step-3 (Setup max memory and its rules for Redis)
$ sudo vi /etc/redis/redis.conf
Find the given lines
replace it with
after all edit done then
:wq to save and exit
Step-4 (Restart the services to make changes in effect)
$ sudo systemctl restart redis-server
Step-5 (Add Redis cache to WordPress configuration file)
wp-config.php file and add these lines to the last of the file.
define( 'WP_CACHE', true ); define( 'WP_CACHE_KEY_SALT', 'techbrown.com' );
After that save and exit
Step-6 (Enable Redis object cache to your WordPress)
Finally you need to install the WordPress plugin – Redis Object Cache to enable the Redis object cache. After installation of plugin now you are ready to use the flush cache option from above plugin settings.
That’s all for now.