# Elasticsearch streaming data

**URL:** <https://discuss.elastic.co/t/elasticsearch-streaming-data/145551>\
**Category:** Elasticsearch\
**Created:** [August 22, 2018, 12:44pm UTC](https://discuss.elastic.co/t/elasticsearch-streaming-data/145551 "2018-08-22T12:44:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![akaNightmare](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/akanightmare/32/27027_2.png) [@akaNightmare](https://discuss.elastic.co/u/akaNightmare)\
**Post date:** [August 22, 2018, 12:44pm UTC](https://discuss.elastic.co/t/elasticsearch-streaming-data/145551/1 "2018-08-22T12:44:13Z")

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Hello,

I am wondering if ES supports some events when documents have been changes?  
Similar to [https://docs.mongodb.com/manual/changeStreams/](https://docs.mongodb.com/manual/changeStreams/)

I want to build a real-time app, and I want to know if there are any best practices to do that in ES.

Thanks.

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**Author:** ![polyfractal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/polyfractal/32/48162_2.png) [@polyfractal](https://discuss.elastic.co/u/polyfractal)\
**Post date:** [August 24, 2018, 1:35pm UTC](https://discuss.elastic.co/t/elasticsearch-streaming-data/145551/2 "2018-08-24T13:35:29Z")

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No , we don't have any sort of "changes" API at the moment. It's on the "eventually" roadmap, but it is [currently stalled](https://github.com/elastic/elasticsearch/issues/1242) on some technical changes that are in progress.

To provide accurate, consistent changes API in a distributed environment, we need to fully implement a project called [Sequence Numbers](https://github.com/elastic/elasticsearch/issues/10708) first. This is a long-running project that has been making progress over the last few versions. It relates to how low-level distributed consensus and replication is handled in Elasticsearch.

Once sequence numbers are fully implemented, a changes API will be unblocked and we can continue working on it.

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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:** [September 21, 2018, 1:50pm UTC](https://discuss.elastic.co/t/elasticsearch-streaming-data/145551/3 "2018-09-21T13:50:01Z")

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