HOW AND WHY NETFLIX BUILT A REAL-TIME DISTRIBUTED GRAPH: PART 3 — QUERYING THE GRAPH WITH GRPC EXECUTION API

Summary from the TLDR Data newsletter

Netflix's RDG query layer handles 8 billion nodes and 150 billion edges using level-by-level parallel traversal, 16 to 24 async threads per instance, and cache TTLs matched to data volatility that achieve 70 to 80% hit rates on stable entities. The result is that even three-hop traversals complete under 150 ms at P99.