# Flush vs clear index cache

**URL:** <https://discuss.elastic.co/t/flush-vs-clear-index-cache/142606>\
**Category:** Elasticsearch\
**Created:** [August 1, 2018, 3:12pm UTC](https://discuss.elastic.co/t/flush-vs-clear-index-cache/142606 "2018-08-01T15:12:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![saad](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saad/32/17214_2.png) [@saad](https://discuss.elastic.co/u/saad)\
**Post date:** [August 1, 2018, 3:12pm UTC](https://discuss.elastic.co/t/flush-vs-clear-index-cache/142606/1 "2018-08-01T15:12:00Z")

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Would you explain to me what is the difference between flush and clear index cache actions. I need more explanation and when we should use these actions.

I read about it in:  
[https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-flush.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-flush.html)  
[https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-clearcache.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-clearcache.html)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 29, 2018, 3:12pm UTC](https://discuss.elastic.co/t/flush-vs-clear-index-cache/142606/2 "2018-08-29T15:12:05Z")

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