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  • Multi-source support, streaming API, and production hardening

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  • The next generation of xbbg — rebuilt from the ground up for performance, flexibility, and reliability. ## What's New **Rust-Powered Core** A complete rewrite of the data engine in Rust, delivering up to 10x faster data retrieval with zero-copy Arrow integration. True async I/O releases Python's GIL, enabling real concurrent workloads. **Multi-Backend Freedom** Native support for pandas, Polars, PyArrow, and more via Narwhals. Use your preferred DataFrame library without conversion overhead. **Smart Caching** Intelligent field type resolution and response caching with local Parquet storage. Fewer API calls, faster iteration, offline access to historical queries. **Production-Ready Infrastructure** Full CI/CD pipeline with automated testing, security scanning, and PyPI releases. A custom BLPAPI emulator enables comprehensive test coverage without live connections.

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