I am new to backend programming but would like to try and put together the backend of an app I am building. I essentially am looking to implement an observer type programming pattern, just between the server and ios app. For instance two different app users may subscribe to different things on the node.js server and would get different json sent to the swift of the app to use. I am unsure however how to go about trying to subscribe a user to the node.js using swift, and then essentially setting a listener for the json response as they come in. I would appreciate any help on this sort of server programming pattern type work if anyone has any references or thoughts.
via dgelinas21
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