differential-observability · unknown
Differential observability
Differential observability is a difference between entities' observations of the same system's health.
Related Observatory article: Differential observability on hesela.com
The gray-failure case is asymmetric: the application observes trouble and the internal observer does not; a detector noticing a problem before an application is affected is a different case. [1]
Relations
- related
- gray-failure, fail-slow
Citations
- Huang et al., Gray Failure: The Achilles' Heel of Cloud-Scale Systems, HotOS 2017, section 3; DOI 10.1145/3102980.3103005. (accessed 2026-10-13)
- Hesela: Fail-slow NVMe SSDs: what SMART and heartbeats miss (accessed 2026-10-13)
JSON: /data/terms/differential-observability.json