# Query cache vs search rate

**URL:** <https://discuss.elastic.co/t/query-cache-vs-search-rate/304468>\
**Category:** Elasticsearch\
**Created:** [May 11, 2022, 1:07pm UTC](https://discuss.elastic.co/t/query-cache-vs-search-rate/304468 "2022-05-11T13:07:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hunsw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hunsw/32/93637_2.png) [@hunsw](https://discuss.elastic.co/u/hunsw)\
**Post date:** [May 11, 2022, 1:07pm UTC](https://discuss.elastic.co/t/query-cache-vs-search-rate/304468/1 "2022-05-11T13:07:11Z")

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We had a search spike in our cluster, the search rate almost tripled. But when checking the metrics it shows that query cache increased almost **tenfold**. What's the explanation for this?

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/4/a/4ac7f529bf70c75e2c4525f1ba422910a9d503f9.png)

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**Author:** ![hunsw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hunsw/32/93637_2.png) [@hunsw](https://discuss.elastic.co/u/hunsw)\
**Post date:** [May 11, 2022, 2:25pm UTC](https://discuss.elastic.co/t/query-cache-vs-search-rate/304468/2 "2022-05-11T14:25:32Z")

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It looks like the metrics are averages that hide the details and a DOS-like query tsunami has been causing the spike.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 8, 2022, 2:26pm UTC](https://discuss.elastic.co/t/query-cache-vs-search-rate/304468/3 "2022-06-08T14:26:17Z")

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