Kafka 4.0 Migration: Slashing Latency and Infrastructure Costs in High-Throughput Systems

As systems scale beyond 10k msg/s, traditional brokers like RabbitMQ often hit Erlang VM bottlenecks that modern distributed logs can overcome. Kafka 4.0's native KRaft mode proves that removing legacy dependencies like ZooKeeper is key to achieving both 55% lower latency and significant operational savings.