Geographic Redundancy
Geographic redundancy is a disaster recovery and high-availability strategy that involves distributing critical systems, data, or infrastructure across multiple physical locations separated by significant distances. It ensures that if one geographic site fails due to natural disasters, regional outages, or other localized events, operations can continue from another location with minimal disruption. This concept is fundamental in designing resilient architectures for applications, databases, and networks.
Developers should implement geographic redundancy when building mission-critical applications that require high availability (e.g., financial services, healthcare systems, or global e-commerce platforms) to mitigate risks from regional failures. It is essential for compliance with business continuity plans and service-level agreements (SLAs) that demand uptime exceeding 99.9%. Use cases include deploying applications across multiple cloud regions, replicating databases in different data centers, or using content delivery networks (CDNs) to serve users from the nearest location.