UI Responsiveness
From APIDesign
A special area of performance work. The trick is not to make something faster, but to make it more pleasant for the user. There are three important numbers:
- 100ms - no need to make any reaction faster, users won't notice anyway
- 1s - indicate work is in progress, otherwise people tend to invoke the action again
- 10s - give people estimate how much time will be needed (so they can get a cup of tea)
More serious info needed. Surprisingly there is nothing at wikipedia::UI Responsiveness!
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