Someone has implemented a multi-region disaster recovery setup using the "pilot light" pattern on AWS, detailing the architecture and trade-offs in a public repository. This approach maintains a minimal, always-on secondary region that can rapidly take over if the primary region fails, achieving a recovery time objective (RTO) of 10-15 minutes – significantly faster than traditional backup and restore methods. The work highlights the practical considerations often omitted in high-level disaster recovery diagrams and provides a valuable reference for those seeking to build more resilient, cost-effective cloud architectures.
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