Shed low-priority load

  • Build
  • Guard 06

Difficulty 3 of 5

A sale starts at 0:20. Checkout rises to 600 requests/s and browsing to 1,000 requests/s. The locked shop API serves about 1,000 requests/s. Keep checkout at 99.9 percent and p99 under 300 ms. Browsing may lose requests but must keep 45 percent. Add one part.

Play level

HTTP/2HTTP/2Users250 req/sUsers250 req/sNode API2 vCPU · 2 GB
HTTP/2HTTP/2Users250 req/sUsers250 req/sNode API2 vCPU · 2 GB
The board at the start of the level
A buffer with a valveDrag or use arrow keys to change the buffer size

Buffer 1,000 jobs · last job waits 1.0 s · 17% turned away

Goals and limits

p99 latency (Checkout)
under 300 ms
Availability (Checkout)
at least 99.9%
Availability (Browse)
at least 45%
Monthly cost
under 16 USD/mo
Parts you can add
Rate limiter, API gateway, App backend
Part limit
1
Traffic
250 req/s

Concepts

How players did

Player results load from the server.

All levels