WClickHouse Adds Zero-Copy Apache Arrow Support for Faster Python Analytics

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WClickHouse, an open-source Python library, has introduced zero-copy columnar data transfer between Apache Arrow and ClickHouse via new insert_arrow() and query_arrow() methods. The integration eliminates row-by-row serialization, a major bottleneck in Python analytics pipelines that causes high RAM usage and garbage collector pauses. Data in Arrow or Parquet format can now be streamed directly to ClickHouse over a socket without duplication in Python's heap. The library is compatible with Python 3.9 through 3.14 and supports Apache Arrow alongside Pydantic v2. It has been tested against live ClickHouse instances with over 95% test coverage and is available on GitHub and PyPI.

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