A Native DuckDB Extension for Zarr & GeoZarr
Eider connects DuckDB's vectorized execution engine directly to multi-dimensional arrays in cloud storage via OpenDAL and Zarrs. It bridges the gap between data-science Python pipelines and fast analytical SQL.
Fast & Vectorized
Chunks are decoded natively inside DuckDB's engine, eliminating Python IPC overhead. Spatial bounding box pruning drops network requests before they start.
Cloud Native
Supports s3://, gcs://, and http:// streams natively via OpenDAL. Automatically fetches partial chunks from remote systems.
COG Virtualization
Transparently read Cloud Optimized GeoTIFFs (COGs) as if they were Zarr stores, intercepting headers and making native HTTP byte-range fetches.