Reducing Cross-Zone Egress at Spotify with Custom gRPC Load Balancing

Explore how Spotify optimizes its microservice architecture to reduce cross-zone traffic and associated costs while maintaining high availability and resilience. Learn about the implementation of custom gRPC load balancing algorithms and the utilization of ORCA technology for exchanging advanced load balancing information between clients and servers. Discover the strategies employed by Spotify to adapt backend-to-backend load balancing to specific business needs, focusing on minimizing cross-zone egress while ensuring low latency and high availability. Gain insights into the challenges and solutions involved in balancing cost optimization with performance in a large-scale, cloud-native environment.