# Watching search results - scale
**URL:** https://discuss.elastic.co/t/watching-search-results-scale/45685
**Category:** Elasticsearch
**Tags:** elastic-stack-alerting
**Created:** [March 29, 2016, 1:02pm UTC](https://discuss.elastic.co/t/watching-search-results-scale/45685 "2016-03-29T13:02:58Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@nige123](https://discuss.elastic.co/u/nige123)
#### Post date: [March 29, 2016, 1:02pm UTC](https://discuss.elastic.co/t/watching-search-results-scale/45685/1 "2016-03-29T13:02:58Z")
Hi,
I'm doing an initial evaluation of Watcher to see if it is appropriate for our use case.
Let's say I've got a document store of 13,000,000 documents and 200,000 subscriptions to watch changes in search results. The daily change in documents is 30,000 per day.
I would like watcher to fire an alert/hook if one of the incoming documents (30,000) matches ones of the watches (200,000).
Will watcher easily handle this load?
Cheers
Nige
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [March 29, 2016, 1:28pm UTC](https://discuss.elastic.co/t/watching-search-results-scale/45685/2 "2016-03-29T13:28:20Z")
Without knowing your exact requirements, that sounds more like a use case for [Percolator](https://www.elastic.co/guide/en/elasticsearch/reference/2.2/_percolator_2.html) than Watcher.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:46pm UTC](https://discuss.elastic.co/t/watching-search-results-scale/45685/3 "2017-07-06T13:46:07Z")