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Redundancy and Failover

Tags: 🛡 System Resilience | ⚙️ Overlapping Roles | 🔄 Backup Paths

Problem
Over-centralized systems fail catastrophically when key nodes are compromised.

Context
In crises, redundancy ensures continuity; in stability, it provides resilience against gradual erosion.

Forces

  • Efficiency bias reducing “unnecessary” capacity
  • Budget pressures eliminating backups
  • Overreliance on single leaders or agencies

Solution
Design overlapping capabilities so failure in one part does not collapse the whole system.

Implementation

  • Backup communication channels
  • Multiple decision-making bodies
  • Distributed infrastructure

Consequences

  • Positive: Improves resilience, enables graceful degradation
  • Negative: Can increase cost and complexity

Examples

  • U.S. nuclear command redundancy
  • Internet packet-routing resilience

Related Patterns
Renewal & Adaptation, Resilience to Capture

Pattern Clusters Anchored Here
TBD

References

  • Perrow, Normal Accidents
  • Taleb, Antifragile