How can I send realtime updates without writing to a DDS? (signals)

[tylerbutler]

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Draft info: https://github.com/microsoft/FluidFramework/tree/main/packages/runtime/datastore-definitions#signals

Sending signals: submitSignal

IFluidDataStoreRuntime.submitSignal(type: string, content: any): void;

To listen to signals, use the "signal" event:

 dataObject1.runtime.on("signal", (message: IInboundSignalMessage, local: boolean) => {
                if (message.type === "MySignal") {
                    // do something
                }
            });

[scaryrawr]

@tylerbutler are there any examples that make use of signals?

[tylerbutler]

There are uses within the framework itself but not in the examples at the moment. That said, I added some draft info to the discussion here that should point you in the right direction.

[gund]

IMO signals are useful in case you need to represent user presence on UI - like a live position of the cursors in the editor.
So you would send signals of every user's cursor position and then render them dynamically in the editor.