Reconcile
Difficulty 2 of 5
At 02:00 the payment provider sends its settlement file: 2,000,000 records. Match each record with the ledger before the books close at 03:00. One match takes 4 ms. About 0.5 percent of records will not match. Keep every one for review.
W 3 + R 3 of 5 · every read sees the last write
Goals and limits
- Completion time
- under 3,600 s
- Lost writes
- none
- Monthly cost
- under 60 USD/mo
- Parts you can add
- Message broker, Managed queue, Reconciliation
- Part limit
- 8
Concepts
How players did
Player results load from the server.