What should I do with old data?
Keep the last good value in view, but treat it as old. Check the source time. Wait for a new source read or use Retry when the app offers it.
A quote is old after 45 seconds. Pool data is old after 30 seconds. A fast page load does not make a source new.
Sample
Section titled “Sample”The page loads in 100 milliseconds. Its quote can still be two minutes old. The source age is the fact that matters.