REST snapshot plus WebSocket delta consistency
This is an exchange app's order book and ticker screen. The design fetches the current snapshot over REST first and then applies only the changes (deltas) that arrive over WebSocket, but now and then the order book on screen drifts from reality. In what order, and by what rules, do you combine the snapshot and the delta stream so consistency doesn't break?
NetworkingShort answerAdvanced
You've got a bug report that the chat app's WebSocket connection drops often and the app …
#websocket
NetworkingMultiple choiceAdvanced
In a live audio broadcast app, the broadcast audio plays over HLS and chat goes over WebS…
#websocket
App lifecycle and systemShort answerExpert
Users complain that when they're writing a long post and step out to another app, what th…
#snapshot
App lifecycle and systemShort answerBasics
When the user goes out to the home screen (with the home button or a swipe), what happens…
#snapshot