# Prioritizing Indices for Search Speed

**URL:** <https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973>\
**Category:** Elasticsearch\
**Created:** [October 29, 2023, 7:48am UTC](https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973 "2023-10-29T07:48:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![maorethians](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/maorethians/32/122370_2.png) [@maorethians](https://discuss.elastic.co/u/maorethians)\
**Post date:** [October 29, 2023, 7:48am UTC](https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973/1 "2023-10-29T07:48:31Z")

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We have an Elasticsearch instance, containing 100s of indices in it with different, statically-defined mappings. Is there a way to prioritize some of them for read/write operations not to be affected by low-priority ones?  
i.e. we want the high-priority indices to have a high performance in search with keeping them in the memory and not to be thrown out of the memory by the low-priority indices

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [October 29, 2023, 7:53am UTC](https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973/2 "2023-10-29T07:53:27Z")

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No, that is not possible within an instance. You could however put search-heavy indices on specific nodes (that hold less data) using [shard allocation filtering](https://www.elastic.co/guide/en/elasticsearch/reference/8.10/shard-allocation-filtering.html).

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**Author:** ![azizim](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/azizim/32/127005_2.png) [@azizim](https://discuss.elastic.co/u/azizim)\
**Post date:** [October 29, 2023, 10:09pm UTC](https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973/3 "2023-10-29T22:09:48Z")

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You can create a dedicated Cluster for searching and leverage CCR from you current cluster to filter only high value index there

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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:** [November 26, 2023, 10:10pm UTC](https://discuss.elastic.co/t/prioritizing-indices-for-search-speed/345973/4 "2023-11-26T22:10:36Z")

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