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Consensus Latency Tails Under Cross-AZ Raft Deployments : Retry, Timeout, and Circuit-Breaker Composition Failures

Gohashicorp/raftbadgerPrometheus

Problem Breakdown

The defect class here is composition: individually sensible timeouts, retries, and circuit breakers interact multiplicatively when layered across a call graph. A 5-node Raft group spread across three availability zones commits at the speed of its slowest quorum route; when one AZ degrades to 40ms RTT while others sit a…

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