# How to verify caches are actually being reused in ES **URL:** \ **Category:** Elasticsearch\ **Created:** [June 28, 2015, 3:06pm UTC](https://discuss.elastic.co/t/how-to-verify-caches-are-actually-being-reused-in-es/24507 "2015-06-28T15:06:53Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![austin\_lee](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@austin\_lee](https://discuss.elastic.co/u/austin_lee)\ **Post date:** [June 28, 2015, 3:06pm UTC](https://discuss.elastic.co/t/how-to-verify-caches-are-actually-being-reused-in-es/24507/1 "2015-06-28T15:06:53Z")
Hello. I want to know how I can confirm that filter caches are actually being used. I can't seem to find any API or documentation towards confirming the use of filter caches besides total memory and evictions, which doesn't really tell me much in this context. The reason I want to confirm is because running the same query w/ filters multiple times gives me the same perf result. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [June 28, 2015, 9:38pm UTC](https://discuss.elastic.co/t/how-to-verify-caches-are-actually-being-reused-in-es/24507/2 "2015-06-28T21:38:08Z")
Try clearing the cache, run a test and then run it again and see if there is a difference? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:04am UTC](https://discuss.elastic.co/t/how-to-verify-caches-are-actually-being-reused-in-es/24507/3 "2017-07-06T00:04:52Z")