Why Database Sharding Needs a Routing Layer Not a Hash

Episode 99 of Database Tech with Fexingo dives into why naive hash-based sharding collapses under real-world workloads. Lucas and Luna break down a specific incident at a mid-size e-commerce company that saw 40 percent of queries miss the correct shard after a rebalance. They explain why a routing layer — like a lookup table or a consistent-hashing ring — prevents data movement storms, and why the industry is moving toward proxy-based sharding. No theory, just the concrete failure mode and how to fix it. #DatabaseSharding #RoutingLayer #ConsistentHashing #ShardRebalancing #DatabasePerformance #Scalability #DistributedSystems #TechFailures #EcommerceDatabase #DatabaseProxy #DataMovement #HashSharding #DatabaseTech #FexingoBusiness #BusinessPodcast #PodcastEpisode #DataEngineering #SQL Keep every episode free: buymeacoffee.com/fexingo