Overview
MTBF is a measure of a system's reliability. A higher MTBF indicates that the system is more stable and less prone to outages.
Calculation
MTBF = (Total Uptime) / (Number of Failures)
Context
While MTBF is a classic engineering metric, in modern DevOps, the focus often shifts toward MTTR (how fast we recover) and MTTD (how fast we detect), acknowledging that failures are inevitable in complex systems.