Lesson 08.6
Circuit breakers
A circuit breaker stops calling a dependency after enough failures, fails fast while open, then allows a few half-open probes to test whether it recovered.
A flaky coupon dependency slows checkout
Ava's coupon computer stops answering. Ben's checkout computer should stop asking it for a while.
In this lesson you'll
- 1Follow one run and learn how to read the picture
- 2Predict what changes before revealing the result
- 3Compare the controls and keep the computer inside its safe line during the rush