ZGATEWAY: LEARNINGS FROM PUTTING A PROXY IN FRONT OF ZIPPYDB

Summary from the TLDR Data newsletter

This post explains why Meta put a managed proxy tier in front of ZippyDB, its massive key-value store. The real lesson is that proxies can turn client-fleet sprawl into a controllable infrastructure boundary: connection fan-in drops roughly 97–98%, batching and coalescing happen across clients, excess traffic from noisy tenants can be selectively rejected, and failover and load-balancing policy can change centrally without waiting for a million clients to update.