Multi Step Processes easy
A frontend UI needs to show a progress bar for a file upload. If the server doesn't support WebSockets, how can the client update the progress bar?
- A Short Polling: Send a request every few seconds to ask 'What is the status?'
- B Telepathy.
- C Assume it takes 10 seconds and just animate the bar blindly.
- D Reload the entire page repeatedly.
Answer: A. Short Polling: Send a request every few seconds to ask 'What is the status?'
While WebSockets are better, Short Polling is the standard fallback. The client repeatedly asks the server for the current state to update the UI.
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