Postgres Foreign Data Wrappers with WASM

Hey HN, Supabase CEO here.

This release makes it easy for anyone to create a Foreign Data Wrapper and share it with the community. Usually FDWs need to be "pre-installed" on Postgres which makes it harder for platforms like Supabase/RDS/Azure/etc

Since the FDWs are written in WebAssembly, they can safely be installed from S3 or GitHub and they are sandboxed by our Wrappers framework, a Rust framework for developing Foreign Data Wrappers (https://fdw.dev)

There are some trade-offs: the performance isn't as good as a "native" FDW. That said, we think the flexibility makes it worthwhile, and we'll improve the performance over time.

The blog posts explains a lot of the technical details. You can find some docs to build your own Wasm Wrapper here:

https://fdw.dev/guides/create-wasm-wrapper/