Designing for Low-Latency Reads with Duplicate Covering Indexes

YugabyteDB offers a solution for achieving low-latency reads in multi-region deployments by utilizing geographically located duplicate covering indexes. These indexes optimize read performance by ensuring they occur in the same region as the application deployment, reducing latency to over 30ms. By creating duplicate indexes with the same structure as the table and pinning them to specific regions using tablespaces, applications can experience consistent reads while writing data across multiple regions incurs a tradeoff. This design approach provides strong consistency with latest data and local read performance but may impact write latency due to cross-region traffic.