Loss across the ocean

  • Fix
  • Wire 21

Difficulty 3 of 5

A cross-ocean path has 140 ms RTT and 1 percent loss. One TCP connection must carry 100 objects/s at 50 KB each. Keep p99 below 500 ms and errors below 1 percent.

0:00. Transfers across the ocean stall. Graph: delivered objects stay below demand while p99 passes 500 ms.

Play level

HTTP/2Partner apps100 req/sAPI server2 vCPU · 1 GB
HTTP/2Partner apps100 req/sAPI server2 vCPU · 1 GB
The board at the start of the level
Connections and streamsDrag or use arrow keys to change the protocol

HTTP/1.1 · connections: 6 · 30 files in 7 round trips, 630 ms

Goals and limits

p99 latency
under 500 ms
Error rate
under 1%
Monthly cost
under 100 USD/mo
Edit limit
3
Traffic
100 req/s

Concepts

How players did

Player results load from the server.

All levels