# Graceful Degradation

Record: `arch:graceful-degradation`
Kind: principle
Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md)
Severity: recommended
Scope: service, UX, system
Canonical: https://banes-lab.com/ontology#arch-graceful-degradation

## Repair

- Refactored by: Add Fallback, Isolate Optional Dependency
- Detected by: critical path dependency on optional service
- Violated by: total outage from noncritical dependency failure
- Measured by: partial availability under failure
- Enforced by: chaos tests

## requires

- [Fallback](https://banes-lab.com/records/lex/fallback.md)
- [Feature Isolation](https://banes-lab.com/records/lex/feature-isolation.md)

## reinforces

- [Fault Tolerance](https://banes-lab.com/records/arch/fault-tolerance.md)

## enables

- [Partial Availability](https://banes-lab.com/records/lex/partial-availability.md)

## conflicts-with

- [All-Or-Nothing Failure](https://banes-lab.com/records/lex/all-or-nothing-failure.md)

## tensions-with

- [Consistency / Feature Completeness](https://banes-lab.com/records/lex/consistency-feature-completeness.md)

## tensions

- [Graceful Degradation Consistency / Feature Completeness](https://banes-lab.com/records/tension/consistency-feature-completeness-graceful-degradation.md)

## referenced-by

- [Fail Fast](https://banes-lab.com/records/arch/fail-fast.md)
- [Fallback Pattern](https://banes-lab.com/records/arch/fallback-pattern.md)