Skewed clocks
Difficulty 3 of 5
Clock A is 300 ms ahead. A contact update reaches B before B writes its replacement at 0.1 seconds. Keep the newer causal write when the replicas settle.
0:00. The contact update was replaced by an older value. Graph: clock A runs 300 ms ahead of clock B.
Fencing tokens · lease 30 s · late write with token 33: rejected
Goals and limits
- Lost writes
- none
- Monthly cost
- under 20 USD/mo
- Edit limit
- 2
- Traffic
- 100 req/s
Concepts
How players did
Player results load from the server.