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by daleharvey 3844 days ago
IndexedDB is not limited to 5MB, its essentially unlimited in Chrome and Firefox. It can be tricky with mobile browsers but they often also have the option of using an unlimited web app wrapper (http://www.html5rocks.com/en/tutorials/offline/quota-researc...)

And as for WebSockets, HTTP is easier to debug and experiment with, in my experience the performance difference for the typical use cases is negligible and when needed it is trivial to wrap the communication in a socket.