# MQTT Hub/Gateway

**URL:** <https://community.homey.app/t/mqtt-hub-gateway/6766>\
**Category:** Apps\
**Created:** [January 14, 2019, 6:59pm UTC](https://community.homey.app/t/mqtt-hub-gateway/6766 "2019-01-14T18:59:50Z")\
**Posts on this page:** 1\
**Showing post:** 968

<div class="post-metadata">

**Author:** ![scanno](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/scanno/32/8358_2.png) [@scanno](https://community.homey.app/u/scanno)\
**Post date:** [May 8, 2021, 5:58pm UTC](https://community.homey.app/t/mqtt-hub-gateway/6766/968 "2021-05-08T17:58:01Z")

</div>

On the MQTT broker app messages are NOT retained when the broker or homey is restarted. The messages are stored in memory, just for the simple fact that there is (or was) no database available to store messages in. That would have meant writing a storage mechanism myself. Not something that is easily done as you can imagine.

---

_[View the full topic](https://community.homey.app/t/mqtt-hub-gateway/6766)._