Fresh, delayed, and closed-candle data
A timestamp is part of the evidence, not a decoration.
- ✓ Distinguish event time from fetch time
- ✓ Know the provider entitlement
- ✓ Do not treat forming candles as final
- ✓ Show temporarily outdated or missing data visibly
Event time and fetch time
Event time is when something occurred; fetch time is when the service received it. A current fetch can still contain an old event.
Real-time versus delayed
Data entitlements vary. Some quotes are real time, others delayed, end-of-day, cached, or unavailable. The interface should state the known status.
Closed candles
Indicators calculated from a forming candle can change before the interval closes. Mark forming and closed data separately when the distinction affects interpretation.
Missingness
Do not silently replace unavailable data with zero or a confident conclusion. Missing information should remain visible and lower confidence where appropriate.
This lesson is educational and does not recommend a security or predict a return. Verify material information independently.