# High Speed Topic MQTT Subscription

**URL:** <https://forum.inductiveautomation.com/t/high-speed-topic-mqtt-subscription/72328>\
**Category:** Ignition\
**Created:** [April 11, 2023, 8:17pm UTC](https://forum.inductiveautomation.com/t/high-speed-topic-mqtt-subscription/72328 "2023-04-11T20:17:10Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [April 12, 2023, 1:24pm UTC](https://forum.inductiveautomation.com/t/high-speed-topic-mqtt-subscription/72328/14 "2023-04-12T13:24:12Z")

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See [this thread](https://forum.inductiveautomation.com/t/difference-gateway-event-vs-tag-event-scripts/63191) for a discussion on the differences between tag event scripts and project tag change scripts.

You may benefit from using tag change scripts instead, because of the unbounded queue size, but only if your workload is "bursty" and not sustained enough that you'd have memory problems.

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_[View the full topic](https://forum.inductiveautomation.com/t/high-speed-topic-mqtt-subscription/72328)._