Register (or clear, with no arg) the cross-instance fan-out hook.
Inversion of control, deliberately: this module must not know that Redis exists. The server
registers the hook at startup only when a message bus is configured, so a single-instance
deployment behaves exactly as before.
Register (or clear, with no arg) the cross-instance fan-out hook.
Inversion of control, deliberately: this module must not know that Redis exists. The server registers the hook at startup only when a message bus is configured, so a single-instance deployment behaves exactly as before.