# Will smaller field names improve performance?

**URL:** <https://discuss.elastic.co/t/will-smaller-field-names-improve-performance/92328>\
**Category:** Elasticsearch\
**Created:** [July 7, 2017, 8:09pm UTC](https://discuss.elastic.co/t/will-smaller-field-names-improve-performance/92328 "2017-07-07T20:09:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JonathanAaron](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jonathanaaron/32/24405_2.png) [@JonathanAaron](https://discuss.elastic.co/u/JonathanAaron)\
**Post date:** [July 7, 2017, 8:09pm UTC](https://discuss.elastic.co/t/will-smaller-field-names-improve-performance/92328/1 "2017-07-07T20:09:29Z")

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I have a flat document with 44 fields. One index has 120577177 documents. When our aggregation returns from es the size of the json is around 14-20mb. When doing load testing a query depending on the date range will take 7 - 30 seconds to run(Hitting elasticsearch api directly). Will reducing the field names improve performance, either on the aggregation or shuttle the data from elastic search to my java app?

Thanks,

Jonny

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [July 7, 2017, 8:21pm UTC](https://discuss.elastic.co/t/will-smaller-field-names-improve-performance/92328/2 "2017-07-07T20:21:13Z")

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What query do you run exactly?

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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:** [August 4, 2017, 8:21pm UTC](https://discuss.elastic.co/t/will-smaller-field-names-improve-performance/92328/3 "2017-08-04T20:21:27Z")

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