Tail Latency
The high-percentile portion of a latency distribution, such as P95, P99, or P99.9, representing the slowest minority of operations.
Boundaries
Tail latency describes the slow end of a distribution and should not be replaced by an average or median when rare slow requests matter.
Related Concepts
- Coordinated Omission
- Head-of-Line Blocking
- Queueing Theory
- Service Level Objective