Turn On Global Site Cache

May 13th Information and Tutorials \ Web Site Performance Enabling the Joomla global cache is easy to do and can make a significant difference in your web site's load times. 3rd party caching components are also very helpful, but they generally only work for visitors and not for anybody logged into the web site. The standard Joomla cache will speed up your web site for all users, logged in or not. 

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Go to your site's Global Configuration on the backend. Go to the Cache tab and set Caching to Yes. Make sure the cache directory is writable by hovering your mouse over the blue Info icon. Then set the number of seconds you want pages cached for.

{cbauthor}You will need to test all of your site's pages/components once you've enabled the global cache. If you have any components installed that load up different JavaScript or CSS files in the header depending on user settings, enabling the global cache will cause problems. I have run into this issue with a currently unreleased component I am building. I haven't come across any other components with the same issue, but this is something to keep in mind so test your site after enabling the global cache.