How to Elevate Your Database Game: Supercharging Query Performance with Postgres FDW

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How to Elevate Your Database Game: Supercharging Query Performance with Postgres FDW
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Foreign data wrappers (FDWs) make remote Postgres tables feel local. That convenience is exactly why FDW performance surprises are so common. A query that looks like a normal join can execute like a distributed system: rows move across the network, remote statements get executed repeatedly, and the local planner quietly becomes a coordinator. In that world, “fast SQL” is not mainly about CPU or indexes. It’s about data movement and round-trips...

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