Introducing Neki

This post introduces Neki, a sharded Postgres offering from PlanetScale. It details the architecture including Neki routers that speak the Postgres wire protocol, sharding and shard groups with real Postgres instances, sidecar connection pooling, and a control plane for managing operations like schema changes, upgrades, failovers, imports, and resharding. It also explains the data topology for mapping logical tables to physical shards and highlights that Neki can be run unsharded initially and resharded later. The post positions Neki as a solution to the scaling limitations of single-machine Postgres instances.