Zalando Adopts Client‑Side Load Balancing to Reach One Million Requests per Second

Zalando’s engineering blog describes a migration to client‑side load balancing. The change was made to support traffic volumes of one million requests per second. The post outlines the motivations behind moving away from server‑side balancing. It details the implementation steps taken by the engineering team. The approach improves latency and resilience for high‑throughput services. Zalando reports measurable performance gains after the migration. The article shares lessons learned and best practices for similar efforts. Readers are invited to apply the insights to their own high‑scale systems.