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Community Blog Series Deep Dive into DuckDB Internals
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Deep Dive into DuckDB Internals

A concise deep-dive series on DuckDB’s internals, from file and table storage to execution, transactions, and optimizer techniques.

DuckDB Internals - Part 1: File Format Overview

This article primarily focused on the file format overview and metadata storage.

DuckDB Internals - Part 2: Table Storage Format

This article provides a detailed analysis of the table storage format based on the DuckDB v1.3.1 source code.

DuckDB Internals - Part 3: Execution Layer Overview

This article introduce the main concepts involved in each module of the execution layer, giving readers a general understanding of what each module does.

DuckDB Internals - Part 4: Optimizer Overview

This article will focus on explaining the purpose of all optimization rules implemented in DuckDB.

DuckDB Internals - Part 5: The Transaction Lifecycle

This article focuses on the start, commit, and rollback of a transaction from the perspective of its lifecycle.

DuckDB Internals - Part 6: DuckDB LocalStorage

This article explains how DuckDB’s LocalStorage efficiently handles INSERT operations within transactions using a shadow-table design and optimistic merging for bulk data.

DuckDB Internals - Part 7: Join Reordering Optimization

This article explains the Join Reorder optimization algorithm used by DuckDB.

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