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This book teaches you how modern database systems work by having you build one. Over fifteen chapters we will design and implement a complete relational database engine in Rust: storage layers that read and write pages to disk, a buffer pool manager that caches hot data in memory, write-ahead logging for crash recovery, B-tree indexes for fast lookups, a transaction system with proper isolation and concurrency control, a SQL parser, a cost-based query optimizer, and an execution engine that runs joins, sorts, and aggregations. Every chapter adds working code to the same project so that by the end you have a coherent, functional database application rather than a collection of isolated examples. If you are a software engineer who wants to understand what happens between typing SELECT * FROM users and seeing results on screen, this is the book for you.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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