Shop administration - FastCache
In administration panel go to Configuration => Configure modules
Select FastCache 
module
Enabling Fast Cache
- Tick Enable FastCache,
- Press Save.
How to manually clear FastCache
Press Clear.
Check out how to clear cache.
Fast Cache advantages
- Up to 100x faster display of your store pages!
- Better indexing in Google. Faster pages are ranked higher.
- Faster display of the shop pages has positive influence on the number of customers remaining in your shop.
- Server overload protection, the system automatically optimizes the pages which are repeatedly invoked.