What is the recommended way to implement this with PUB/SUB? Let me clarify what I need: By guaranteed delivery I mean that a message published to a topic should be delivered exactly once. The message is considered to be delivered upon the client delivery. confirmation. If at the moment of publishing there is no subscribers the message should wait for the specified amount of time, and if a subscriber is not connected within this time window the message should be discarded.
My primary target here is to provide a mechanism for devices intermittently connected (sometimes on sometimes off) What do you think?
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