AI / Merge Mind: The Self Learning AI Code Review Bot Interview Questions
How does the Circuit Breaker Pattern prevent cascading failures in Merge Mind?
A circuit breaker sits in front of a risky dependency, in Merge Mind's case, primarily the call out to the OpenAI API, and monitors how often that call fails.
- While calls are succeeding normally, the breaker stays closed and requests pass through as usual
- Once failures cross a threshold, the breaker opens, and further calls fail immediately instead of piling up waiting on a struggling dependency
- After a cooldown period, it allows a limited number of test calls through to see if the dependency has recovered
Without this pattern, a slow or failing OpenAI API could cause requests to back up across Merge Mind's whole pipeline, turning one external outage into a system-wide slowdown instead of a contained, fast-failing error.
What state does the circuit breaker enter once failures cross a threshold?
What would happen without this pattern during an OpenAI outage?
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