Lamport time

  • Order
  • Quorum 15

Difficulty 3 of 5

Nodes A and B use Lamport clocks that start at 0. A does one local action. Then A and B exchange one message and one reply. Order the 5 events from the lowest Lamport time to the highest.

Play level

Put these steps in order

  • A receives the reply from B
  • B sends a reply to A
  • B receives the message from A
  • A sends a message to B
  • A performs a local action
A lease with a fencing tokenTap to turn the fencing tokens on or off

Goals and limits

p99 latency
under 200 ms
Monthly cost
under 10 USD/mo
Traffic
100 req/s

Concepts

How players did

Player results load from the server.

All levels