# Optimistic caching - what is it?

**URL:** <https://discourse.pi-hole.net/t/optimistic-caching-what-is-it/56761>\
**Category:** Community Help\
**Created:** [July 26, 2022, 1:08pm UTC](https://discourse.pi-hole.net/t/optimistic-caching-what-is-it/56761 "2022-07-26T13:08:59Z")\
**Posts on this page:** 1\
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**Author:** ![Abhijeet\_Ghosh](https://discourse-cdn.pi-hole.net/letter_avatar_proxy/v4/letter/a/eb9ed0/32.png) [@Abhijeet\_Ghosh](https://discourse.pi-hole.net/u/Abhijeet_Ghosh)\
**Post date:** [July 26, 2022, 1:08pm UTC](https://discourse.pi-hole.net/t/optimistic-caching-what-is-it/56761/1 "2022-07-26T13:08:59Z")

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I read about optimistic caching on reddit, but i can't find the thread again. Here are a few questions.

What is optimistic caching?  
How do i enable it on pi hole (not unbound)?  
How much extra ram does it take up?  
Do i have to increase 10000 caches?

Thanks for the help in advance.

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