> For the complete documentation index, see [llms.txt](https://docsv1.polyfrost.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docsv1.polyfrost.org/events/using-the-events-system.md).

# Using the events system

OneConfig has it's own custom event system, which can either be callback- or subscriber-based depending on your preferences. It provides several default events relating to basic OneConfig functionality and Minecraft-relating functionality.

If you have used the [Fabric API](https://modrinth.com/mod/fabric-api/), you are likely more familiar with **callback-based events**.\
If you have worked with [MinecraftForge](https://files.minecraftforge.net/net/minecraftforge/forge/) or [NeoForge](https://neoforged.net/), you are likely more familiar with **subscriber-based events**.

Due to how the systems handle event dispatches internally they are practically equivalent in speed. The subscriber based system takes a bit longer due to it needing to scan for methods, however you should use whichever style you are more comfortable with.

{% content-ref url="/pages/yWuhg9gEViYVhqCG8hGy" %}
[Callback events](/events/using-the-events-system/callback-events.md)
{% endcontent-ref %}

{% content-ref url="/pages/60DG6DmTSJfSAEhSgWI5" %}
[Subscriber events](/events/using-the-events-system/subscriber-events.md)
{% endcontent-ref %}


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