Pattern 25 / RESILIENCE
Use this when serving something useful when a noncritical subsystem breaks.
Graceful Degradation fits when serving something useful when a noncritical subsystem breaks. Mechanism: rank capabilities by importance and provide fallback experiences for weaker dependencies. Use it for user-facing systems with recommendations, media, search, personalization, or analytics. The toll: degraded modes must be designed and tested before outages happen.
User-facing systems with recommendations, media, search, personalization, or analytics.
Show cached/trending results when personalization is unavailable.
Describe the pressure first, then the mechanism, then the cost. That keeps the design grounded.
Same pressure family