> For the complete documentation index, see [llms.txt](https://dotsnet.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dotsnet.gitbook.io/docs/user-manual/networking-and-burst.md).

# Networking & Burst

While Jobs aren’t always a good idea, **Burst** compiling main thread code is always a good idea.

Burst allows for tremendous performance improvements, usually at least by an order of magnitude. It can make the difference between 10k and 100k entities.

Important: you can not call `NetworkServerSystem.Send(Message)` from Burst. Instead, use a `NativeMultiMap<connectionId, NetworkMessage>` as a buffer, add your messages from within the **Burst** **ForEach** call, and then call `NetworkServerSystem.Send(NativeMultiMap)` afterwards.

Even though we have the additional buffer step, the code still runs at least an order of magnitude faster thanks to Burst.<br>

{% hint style="info" %}
When starting out, don’t worry too much about Burst.
{% endhint %}