Apache Arrow in-memory columnar format reference — zero-copy, cross-language.
CommandDescriptionintroArrow overview, zero-copy, architectureformatColumnar layout, buffers, record batchespythonpyarrow arrays, tables, compute functionsflightArrow Flight RPC server/clientdatasetDataset API, partitioning, pushdownintegrationpandas/DuckDB/Polars/Spark/R interopgandivaLLVM expression compilerecosystemImplementations, ADBC, projects