# Knn vectors

**URL:** <https://discuss.elastic.co/t/knn-vectors/333199>\
**Category:** Elasticsearch\
**Tags:** vector-search\
**Created:** [May 11, 2023, 11:08am UTC](https://discuss.elastic.co/t/knn-vectors/333199 "2023-05-11T11:08:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![searchwithme](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/searchwithme/32/137075_2.png) [@searchwithme](https://discuss.elastic.co/u/searchwithme)\
**Post date:** [May 11, 2023, 11:08am UTC](https://discuss.elastic.co/t/knn-vectors/333199/1 "2023-05-11T11:08:22Z")

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Let us say I am building an ecommerce app and there are 2 users:  
user A : always searches for electronics (laptop, headphones, etc)  
user B: searches for snacks, beverages

Is it possible to show a page with banner that has electronics for user A and snacks for user B as soon as they log in? and also show similar recommendations when they search for it?

Can this be accomplished using knn?

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<div class="post-metadata">

**Author:** ![mayya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mayya/32/83147_2.png) [@mayya](https://discuss.elastic.co/u/mayya)\
**Post date:** [May 18, 2023, 9:52pm UTC](https://discuss.elastic.co/t/knn-vectors/333199/2 "2023-05-18T21:52:55Z")

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Knn search is used to find similar items, so recommendations could be a good use case of it.

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<div class="post-metadata">

**Author:** ![searchwithme](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/searchwithme/32/137075_2.png) [@searchwithme](https://discuss.elastic.co/u/searchwithme)\
**Post date:** [May 19, 2023, 12:41pm UTC](https://discuss.elastic.co/t/knn-vectors/333199/3 "2023-05-19T12:41:37Z")

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> [@mayya](#):
>
> ind similar items, so recommendations could be a good use case of it.

does this mean knn can be used for my usecase

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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:** [June 16, 2023, 12:42pm UTC](https://discuss.elastic.co/t/knn-vectors/333199/4 "2023-06-16T12:42:25Z")

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