Reducing Kafka connections by 10x with a sidecar pattern

352 · Zapier · Oct. 31, 2025, 5:05 p.m.
Summary
This blog post discusses an innovative approach to significantly reduce Kafka connections, addressing the challenges of excessive TCP connections in a large-scale Kafka setup. It introduces a gRPC sidecar pattern that consolidates producer connections per pod, enhancing performance while preserving data ordering, and reducing resource consumption. This strategy minimizes connection overhead and complexity, improving the overall system's efficiency. Key insights include the importance of managing connections and prioritizing metrics for monitoring system performance during implementation.