Cacheable page checklist

• Pages use GET requests

• Pages render only cacheable blocks

• Pages render without sensitive private data; session and customer DTO objects are empty

• Functionality specific to both current session (customer) and page should be written using JavaScript (e.g., related product listing should exclude items that are already in the shopping cart)

• Model and block level should identify themselves for invalidation support

• Declare a custom context variable if you plan to show different public content with the same URL

Non-cacheable page checklist

• Use POST requests to modify Magento state (e.g., adding to shopping cart, wishlist, etc.)

• Blocks that can't be cached should be marked as non-cacheable in the layout. However, be aware that adding a non-cacheable block to a page prevents the full page cache from caching that page.

• Controllers that don't use layouts should set no-cache HTTP headers