# Minimize garbage collection **URL:** \ **Category:** Elasticsearch\ **Created:** [October 24, 2018, 5:43am UTC](https://discuss.elastic.co/t/minimize-garbage-collection/153718 "2018-10-24T05:43:59Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![surajdalvi](https://avatars.discourse-cdn.com/v4/letter/s/85f322/32.png) [@surajdalvi](https://discuss.elastic.co/u/surajdalvi)\ **Post date:** [October 24, 2018, 5:43am UTC](https://discuss.elastic.co/t/minimize-garbage-collection/153718/1 "2018-10-24T05:43:59Z")
Hi, How to Minimize garbage collection memory in elastic cluster? ---
**Author:** ![gbrown](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/gbrown/32/34482_2.png) [@gbrown](https://discuss.elastic.co/u/gbrown)\ **Post date:** [October 26, 2018, 2:56pm UTC](https://discuss.elastic.co/t/minimize-garbage-collection/153718/2 "2018-10-26T14:56:34Z")
Hi Suraj! The most important thing is to make sure your heap size is set correctly - we have some [guidance on heap sizing in our documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html). There's also [this blog post](https://www.elastic.co/blog/a-heap-of-trouble) which goes into more depth on _why_ those recommendations improve memory usage and garbage collection. That blog post also contains some usage recommendations, particularly around sharding, aggregations, and bulk indexing, to keep memory usage and garbage collection under control. The post is a couple years old now, but it is still very relevant. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 23, 2018, 2:56pm UTC](https://discuss.elastic.co/t/minimize-garbage-collection/153718/3 "2018-11-23T14:56:35Z")
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