# Index name conventions **URL:** \ **Category:** Elasticsearch\ **Created:** [May 30, 2018, 7:06pm UTC](https://discuss.elastic.co/t/index-name-conventions/133930 "2018-05-30T19:06:54Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Sebastian\_Herrera](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sebastian_herrera/32/53209_2.png) [@Sebastian\_Herrera](https://discuss.elastic.co/u/Sebastian_Herrera)\ **Post date:** [May 30, 2018, 7:06pm UTC](https://discuss.elastic.co/t/index-name-conventions/133930/1 "2018-05-30T19:06:54Z")
Hi all, can anyone tell me why elastcisearch always add the date in the index name, is there any performance reason or is only because they like Regards ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [May 30, 2018, 10:20pm UTC](https://discuss.elastic.co/t/index-name-conventions/133930/2 "2018-05-30T22:20:52Z")
That's not Elasticsearch, it'd be the client that is requesting the index to be created, eg Logstash. It's done for a few reasons; 1. Index management, so you can delete data after a given date. Deleting an index is much easier than deleting many documents in an index. 2. (In the past) When you made a query with a date range, Elasticsearch and Kibana used to use the date in the index name (if it had one) to only query the exact index range it needed. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 27, 2018, 10:20pm UTC](https://discuss.elastic.co/t/index-name-conventions/133930/3 "2018-06-27T22:20:53Z")
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