On the admin page under Webclient Settings there is an item named “servoy.webclient.datanotify.frequency”. Clicking the Info button reveals the following explanation:
This is the polling frequency in seconds that a webclient will look for data changes on the server, default/empty = 5s, 0 = disabled
When 100 clients are using a solution it seems like this would create a lot of chatter. What setting is recommended for 100 simultaneous webclients?
The question is how important data broadcast are for your users, if the users never see shared data, then there will be never a databroadcast to them, so polling each 5 seconds is useless.
If they do see shared data, it depends how important it is for you they are updated and how fast.
The data notify check is very small, one packet back and forth, so network wise no big deal, the server has indeed to handle the request, but this can be monitored by watching you server network IO-wait and CPU usage.