Stability

Stability is synonymous with the system's resilience and ability to withstand changes without cascading failures.

Change Failure Rate (CFR):

A metric that quantifies the percentage of changes that result in a failure.

• Formula: CFR = (Failed Deployments / Total Deployments)

Source: 2022 Accelerate State of DevOps, DORA

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Mean Time to Resolve (MTTR):

This measures the average time taken to recover from a failure, a lower MTTR indicating higher operational efficiency.

Source: 2022 Accelerate State of DevOps, DORA

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Change Failure Rate (CFR) and Mean Time to Resolve (MTTR) are critical for evaluating the resilience and reliability of the system, especially when changes are introduced. They help in identifying issues and understanding the system's behavior post-deployment.