DuckDB Blog company blog

Asynchronous I/O in DuckDB: Work, Thread, Work

by Pedro Holanda duckdb.org published 2026-07-31

Starting with v2.0, scheduled for fall 2026, DuckDB will support asynchronous reads of Parquet and CSV files. This can significantly speed up queries when synchronous I/O does not saturate the available bandwidth, as is typical in EC2/S3 compute-storage setups.

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Databases & DataSystems & Performance2026

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