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Clear Both Smarty Cache and LiteSpeed Cache
There is sometimes confusion, when it comes to PrestaShop caching. Whenever possible, be specific about which cache should be cleared. The phrase “clear the cache” could mean “clear PrestaShop's internal Smarty Cache,” or it could mean “purge LiteSpeed Cache.” Maybe it means both.
If you make changes to your theme, please remember to clear both Smarty Cache and LiteSpeed Cache. Failure to clear both caches may lead to messy layout problems.
Clearing Smarty Cache
PrestaShop Smarty Cache can be found on the Configure > Advanced Parameters > Performance > Smarty menu. The Clear cache button on the top of the page clears Smarty Cache.
When your shop has been modified, especially your theme, you will need to clear Smarty Cache.
Clearing LiteSpeed Cache
When the LiteSpeed Cache module is installed, it can be found on the IMPROVE > Module Manager > LiteSpeed Cache Plugin menu. Click Configure to see all of the available LiteSpeed Cache settings.
The *Flush All PrestaShop Pages button on the top of the page clears LiteSpeed Cache.
