Caracal removes centralized Redis coordination costs

The author examines how to take a centralized coordinator off the request path in distributed systems using Caracal and evaluates a delegated caching design for circuit breakers, bulkheads, and rate limiters. Sandbox experiments demonstrate that caching verdicts and leasing capacity successfully reduce Redis coordination commands and latency without sacrificing fleet-wide resilience. However, the author notes that relaxed coordination increases stale admissions during failures and requires careful handling during outages. Open article →