Rollups

  • Choose
  • Chain 15

Difficulty 4 of 5

A payments app sends 300 transfers/s, and transfers need p99 below 5 s. At midnight, 500 users ask to withdraw their funds to the main chain. Every withdrawal must be final within 24 hours. Pick where the app runs.

Play level

Options

  • Run every transfer on the main chain
  • Optimistic rollup
  • ZK rollup
One data key seals many recordsTap or press Space to change how records get a key

Goals and limits

p99 latency (Transfers)
under 5 s
Error rate (Transfers)
under 0.1%
Completion time (Withdrawals)
under 86,400 s
Lost writes
none
Monthly cost
under 100 USD/mo
Traffic
300 req/s

Concepts

How players did

Player results load from the server.

All levels