How to clear cache? (Joomla)

How to clear cache? And what does cache do?

Cache is actually the data files that are retrieved from either database or anywhere else and store it on the server so that when users want to retrieve it again the server will just give them the cache and hence it will save the traffic time from server to database.

Then we we need to clear cache?  Sometimes we have modified something from the source and would like to check if the content is updated.  In this moment we have to clear cache in order to see the updated content.

Step to clear cache in Joomla:

Step 1:
Click System from menu.

Step 2:
Select the type of cache that you want to delete and click on the delete button as highlighted.

You have just cleared cache!

Enjoy!