Looks interesting! It reminds me of pg_lake, which we evaluated for our startup https://lobu.ai but it's missing a lot of pushdown capabilities which made OLAP queries expensive.
I also tried DuckLake but that required us to move away from PG-first approach. I was thinking of using Debezium to create Iceberg on S3 for our append-only PG tables and use DuckDB. I will try Streambed out as well!
Both projects are relevant. Curious, what kinda pushdown capabilities that you were looking for?
Does pushdown require support at this part of the stack or can you just delegate to Datafusion as your query engine, which has very good pushdown