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Retries and circuit breaking in a mesh

Source: interviewintermediate

WHAT IT TESTS: resilience patterns at the proxy. OUTLINE: configure bounded retries with timeouts for transient errors, and a circuit breaker via outlier detection plus connection-pool limits to shed load from a failing dependency.

WHAT IT TESTS: that you can make a service resilient declaratively and avoid making outages worse. ANSWER OUTLINE: set automatic retries with a sensible attempt cap, per-try timeout, and retry only on idempotent or transient conditions; configure a circuit breaker through outlier detection that ejects unhealthy endpoints, plus connection-pool limits that fail fast when the pool is saturated. RED FLAG: configuring unlimited retries with no timeout, which amplifies load and causes retry storms that turn a blip into a cascade.

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Retries and circuit breaking in a mesh · Tezvyn