# Cardinality Video

**URL:** <https://community.influxdata.com/t/cardinality-video/24563>\
**Category:** Systems\
**Tags:** influxdb\
**Created:** [April 7, 2022, 8:05pm UTC](https://community.influxdata.com/t/cardinality-video/24563 "2022-04-07T20:05:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Anaisdg](https://sea1.discourse-cdn.com/flex023/user_avatar/community.influxdata.com/anaisdg/32/6401_2.png) [@Anaisdg](https://community.influxdata.com/u/Anaisdg)\
**Post date:** [April 7, 2022, 8:05pm UTC](https://community.influxdata.com/t/cardinality-video/24563/1 "2022-04-07T20:05:01Z")

</div>

In this video we’ll learn about:

- what cardinality is
- how series are indexed in influxdb
- how to use tags and fields intelligently to reduce cardinality
- common mistakes users make that lead to runaway cardinality

[![](https://us1.discourse-cdn.com/flex023/uploads/influxdata/original/2X/8/84a5dd29e42c52d4155210dcf0e34636c779e327.jpeg "Cardinality in InfluxDB Cloud") ](https://www.youtube.com/watch?v=kHIjROe0ZpA)