Commerce Personalized Find: in which controller should I refresh properties?

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I am looking at personalization documentation: https://world.episerver.com/documentation/developer-guides/personalization/personalized-find/

It says that I have to refresh properties. For this reason, I have to add an attribute to the controller or call API explicitly. But it doesn't say which controller - search controller or product controller or any other controller?

Also, the documentation says that it requires caching of those refreshed properties. Is it implemented by Episerver or should I implement this caching?

P.S. Someone moved this thread under Find while it is more Commerce related as personalization is Commerce only.

#187589
Edited, Jan 29, 2018 10:19
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