Making layers automatically refresh is a new feature as of GeoMOOSE 2.8. This is built-in, no need for extensions or additional libraries.
Find the <map-source> which should auto-refresh. Add the auto-refresh attribute to it.
For example:
<map-source name="vehicle-locations" auto-refresh="15000">
<layer name="buses"/>
<layer name="trucks"/>
<layer name="tractors"/>
</map-source>
The auto-refresh is specified in milliseconds. The example above will refresh the layer every 15 seconds.