refers to how well a system's state or status can be understood from its external outputs. Computer systems are measured by observing CPU time, memory, disk space, latency, errors, etc. The more observable a system is, the easier it is to understand how it’s doing by looking at it. 來源:CNCF Observability Whitepaper 可觀測性是⼀個應⽤程式的特性,指的是利⽤其外部輸出來理解系統狀態 或狀態的程度。計算機系統通過觀察 CPU 時間、記憶體、磁碟空間、延 遲、錯誤等來衡量。系統的可觀測性越⾼,越容易通過觀察來理解它的運 ⾏情況。