Retry storm

  • Fix
  • Level 23 of 41
  • Queue

Difficulty 3 of 5

One thousand callers per second use a one-core service. Its link fails from 0:02 to 0:04. Recover at least 99.9 percent of requests without a second overload wave.

0:04. The link is back, but the service overloads again. Graph: two error peaks, the second one longer.

Play level

HTTP/2Users1,000 req/sAPI server1 vCPU · 1 GB
HTTP/2Users1,000 req/sAPI server1 vCPU · 1 GB
The board at the start of the level
A retry stormArrow keys change the retries. Tap to turn jitter on or off.

3 retries per call · no jitter · peak 6.0× normal load

Goals and limits

Error rate
under 0.1%
p99 latency
under 5 s
Monthly cost
under 100 USD/mo
Edit limit
3
Traffic
1,000 req/s

Concepts

How players did

Player results load from the server.

All levels