RealtimeCallback(RealtimeModelEvent.OnDidReadProperties)
It seems that the RealtimeCallback always fires even if the RealtimeSet didn't change. This is the code i have:
KHi @Andrei Vaduva. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. 
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The attribute with is designed to fire after a model reads properties from a remote update. This means it will trigger every time there is a deserialization pass, regardless of whether the has changed or not.
If you want to trigger an event only when the changes, you might want to consider using the or events provided by the class. These events fire when a model is added or removed locally or remotely.
Here is an example of how you might use these events:
In this example, the event will only fire when a model is added or removed from the .
Please note that this code is just an example and might need to be adjusted to fit your specific use case.
The attribute with is designed to fire after a model reads properties from a remote update. This means it will trigger every time there is a deserialization pass, regardless of whether the has changed or not.
If you want to trigger an event only when the changes, you might want to consider using the or events provided by the class. These events fire when a model is added or removed locally or remotely.
Here is an example of how you might use these events:
In this example, the event will only fire when a model is added or removed from the .
Please note that this code is just an example and might need to be adjusted to fit your specific use case.
KFor more information, you can refer to the RealtimeSet<TValue> documentation (https://normcore.io/documentation/reference/classes/Normal.Realtime.Serialization.RealtimeSet%601) and the RealtimeModelEvent documentation (https://normcore.io/documentation/reference/classes/Normal.Realtime.RealtimeModelEvent).
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Note: you can ask me a follow up question by @ mentioning me again
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Mmodel added event doesn't fire if the contents of the set changes
Ma workaround is to add an int property next to the set which you can increment when there's a change
Lthat's what i would expect. I'm trying to build a simple matchmaking system but i'm having trouble matching 2 users if they join the matchmaking room really quickly, in that case, they both create a room instead of one creating a room and one joining
Li think i'll fix it with a random delay between 2 values and that's it 
Mnot much you can do about 2 players creating a match at the same time
Mat least the 3rd player will have a choice of matches lol
Mor you can create a waiting for match queue
Mand only create a match when there's 2 people in the queue
Lhmm, that would work
Mwith some time-out or start now button
Land the lowest timestamped client will create the room and the other can join