Stuck nonces
Difficulty 3 of 5
The exchange sends 400 payouts/s from 64 hot wallet addresses. Eight signers read one payout log, and each signature takes 6 ms of CPU. Transactions from one address must reach the chain in nonce order, but many arrive early and get stuck. You have 2 edits.
0:10. Payouts stall. Nodes hold 2,000 transactions that arrived before a lower nonce from the same address.
Fencing tokens · lease 30 s · late write with token 33: rejected
Goals and limits
- Out of order
- none
- Queue lag
- under 5 s
- Lost writes
- none
- Monthly cost
- under 80 USD/mo
- Parts you can add
- Kafka log, Worker
- Part limit
- 8
- Edit limit
- 2
Concepts
How players did
Player results load from the server.