Does setting a cacheable false on block invalidate full page cache for entire page?

Question

I have heard this but I cannot confirm it. Does anyone know?

Answer 1

It is true, you can see it mentioned the Dev Docs too if you want extra confirmation :

To create an uncacheable page, mark any block on that page as uncacheable in the layout using cacheable="false".

You can see that on this page.

• LM_Fielding: So should this situation be avoided at all costs?
• Ben Crook: @LM_Fielding Unless you want to purposefully stop the whole page from being cached then yeah I would avoid. If you need to prevent one block from being cached take a look at hole punching methods.
• LM_Fielding: I'm aware of hole punching methods, but thank you for the great tip! That is the reason I'm asking.

Answer 2

Yes it does. Full page cache will not be used on that page. But block cache and the rest works.

Block with Cachable=false not rendered on product view page

• siliconrockstar: Of note, FPC is often responsible for the majority of caching performance gains, so thinking 'oh I'm just disabling one cache out of like 12' is usually a bad idea.