# Unexpected drop in filter cache size **URL:** \ **Category:** Elasticsearch\ **Created:** [November 1, 2013, 1:30pm UTC](https://discuss.elastic.co/t/unexpected-drop-in-filter-cache-size/14216 "2013-11-01T13:30:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Val\_Vakar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/val_vakar/32/2017_2.png) [@Val\_Vakar](https://discuss.elastic.co/u/Val_Vakar)\ **Post date:** [November 1, 2013, 1:30pm UTC](https://discuss.elastic.co/t/unexpected-drop-in-filter-cache-size/14216/1 "2013-11-01T13:30:06Z")
I'm monitoring ES using bigdesk and under heavy load I noticed the filter and field caches sometimes dramatically drop in size (by 90% or so). Cache evictions are reported as 0. There's plenty of free RAM and the cache size is nowhere near the configured limit. My main concern is that I may have lost a lot of the cached values. Thanks! -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 2:09am UTC](https://discuss.elastic.co/t/unexpected-drop-in-filter-cache-size/14216/2 "2017-07-06T02:09:20Z")
Closed on July 6, 2017, 2:09am UTC