200k devices
Difficulty 4 of 5
Send one new state command to 200,000 devices. Five percent are offline until 0:10. Configure MQTT so all devices have the command after reconnect. No final command may be missing.
HTTP/1.1 · connections: 6 · 30 files in 7 round trips, 630 ms
Goals and limits
- Lost writes
- none
- Durability
- at least 100%
- Monthly cost
- under 100 USD/mo
- Parts you can add
- MQTT broker
- Part limit
- 16
- Traffic
- 1 req/s
Concepts
How players did
Player results load from the server.