Tag
hedging
- Apr 23, 2026 Hedged Requests, Tied Requests, and the Cost of Buying Back the Tail When issuing a second copy of a request reduces latency enough to justify the extra work, how to pick the hedge delay from the latency distribution, and why request tying costs a round trip. performance engineering
- Aug 19, 2024 Hedged Requests and the Arithmetic of Tail Latency Why the slowest of several parallel calls sets the latency of a fan-out, and how a delayed second attempt trades a fixed slice of extra load for a large reduction in the tail. backend systems