# What happens if ES for visibility is down?

**URL:** <https://community.temporal.io/t/what-happens-if-es-for-visibility-is-down/2064>\
**Category:** Community Support\
**Tags:** elasticsearch, visibility\
**Created:** [May 3, 2021, 7:06pm UTC](https://community.temporal.io/t/what-happens-if-es-for-visibility-is-down/2064 "2021-05-03T19:06:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Chitresh\_Deshpande](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/chitresh_deshpande/32/550_2.png) [@Chitresh\_Deshpande](https://community.temporal.io/u/Chitresh_Deshpande)\
**Post date:** [May 3, 2021, 7:06pm UTC](https://community.temporal.io/t/what-happens-if-es-for-visibility-is-down/2064/1 "2021-05-03T19:06:43Z")

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Hi Folks

We’re planning on setting up Temporal cluster with Cassandra as core/main DB and ElasticSearch for visibility.  
We’re in the process of determining SLAs for ElasticSearch cluster. Hence had a question around it…

What happens if ES configured for visibility goes down?  
I understand it will impact read queries for Worfklows, but will it also impact core functionality of temporal?

Thanks

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<div class="post-metadata">

**Author:** ![Wenquan\_Xing](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/wenquan_xing/32/362_2.png) [@Wenquan\_Xing](https://community.temporal.io/u/Wenquan_Xing)\
**Post date:** [May 3, 2021, 7:18pm UTC](https://community.temporal.io/t/what-happens-if-es-for-visibility-is-down/2064/2 "2021-05-03T19:18:08Z")

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Temporal use a dedicated queue for visibility tasks, meaning core functionality is not depending on the ES.

with above said, if your own business logic is depending on ES, then you will see some impact