Flash crowd

  • Survive
  • Level 12 of 41
  • Cache

Difficulty 3 of 5

A post starts at 100 reads/s, then rises to 10 and 50 times that rate. Use the build windows to protect the origin. Keep p99 below 150 ms and 99 percent of reads available.

Play level

HTTP/2Users100 req/sAPI server1 vCPU · 2 GB
HTTP/2Users100 req/sAPI server1 vCPU · 2 GB
The board at the start of the level
Cache size and hit ratioDrag or use arrow keys to change the cache size

1,600 keys · hit 81% · mean 3.2 ms

Goals and limits

p99 latency
under 150 ms
Availability
at least 99%
Time within SLO
at least 95%
Monthly cost
under 3,000 USD/mo
Waves
3
Time within SLO
at least 95%
Parts you can add
CDN
Part limit
16
Traffic
100 req/s

Concepts

How players did

Player results load from the server.

All levels