Stop Building Data Pipelines: Cross-Database Queries With PostgreSQL Foreign-Data Wrappers

Foreign-data wrappers (FDWs) are extensions in PostgreSQL that simplify cross-database querying by allowing direct connections between databases without the need for data migrations, pipelines, or ETL jobs. FDWs enable developers to run complex queries across multiple databases and retrieve insights from a single interface. This solution is particularly useful for managing sprawling, multi-database environments in microservices architectures, integrating Amazon RDS with Timescale for real-time analysis, and aggregating distributed data for real-time insights. By using FDWs, developers can save time on ETL processes, reduce the risks of data duplication and inconsistency, and focus more on building valuable insights from their data.