The ledger log
Difficulty 4 of 5
Recover account state from 10,050,000 saved events of 128 bytes each. A snapshot is 160 MB. Set the snapshot policy so recovery loads a snapshot and replays the rest in less than one minute.
Tables · a read touches 3 places in 0.5 ms · a shared change writes 1 place
Goals and limits
- Replay time
- under 60 s
- Monthly cost
- under 300 USD/mo
- Parts you can add
- Kafka log
- Part limit
- 16
- Traffic
- 10 req/s
Concepts
How players did
Player results load from the server.