TLDR Tech / Data
DuckDB Internals: Why is DuckDB Fast?
DuckDB is fast because it runs in-process, avoids server/client data movement, and combines columnar storage, query optimization, predicate pushdown, vectorized execution, and row-group pruning to scan only the data it needs. This post explains how DuckDB turns SQL into an executable plan and why its storage and Parquet-reading model make analytics feel unusually fast on a single machine.
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