Tail-tolerance as a Systems Principle not a Metric
Marios Kogias, Edouard Bugnion · 2020
Tail-latency tolerance (or just simply tail-tolerance) is the ability for a system to deliver a response with low-latency nearly all the time. It it typically expressed as a system metric (e.g., the 99th or 99.99th percentile latency) or as a service-level objective (e.g., the maximum throughput so that the tail latency is below a desired threshold).