Articles
The Tail at Scale
The paper that explains why your p50 latency dashboard is lying to you: at scale, it's the tail — p99, p999 — that decides whether users experience your service as fast, because any single request has to survive every slow component in its path. Dean and Barroso's techniques for taming it, especially hedged and tied requests, are still the starting point for anyone designing a fan-out call pattern or arguing for stricter SLOs on a critical dependency. Dense, but every page earns its place — required reading before you design anything with fan-out on the critical path.