Multiple ChoiceBeginner 45s
Append-Only Event Store for Finance
What is the primary correctness benefit of modeling financial state as an append-only event store rather than mutable rows?
Options
- 1It preserves a complete, tamper-evident history so any balance can be rebuilt and audited
- 2It removes the need to run any external database engine, letting balances live only in memory
- 3It makes every write noticeably faster than a plain in-place row update, even under heavy load
- 4It eliminates the requirement to keep periodic backups of the data, since rows are never changed
Think you can answer under pressure?
Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.