Build Your Own Database From Scratch
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Build Your Own Database From Scratch

Persistence, Indexing, Concurrency

About the Book

Databases are not black boxes. Understand them by building your own in small steps and simple Golang code.

A step-by-step walkthrough of a minimal persistent database implementation.

  1. Start with a B+tree, the data structure for querying and manipulating the data.
  2. Make it durable, that’s what makes a DB different from a file.
  3. Relational DB with concurrent transactions on top of the copy-on-write B+tree KV.
  4. A SQL-like query language, the finishing touch.


You may also like my other book: Build Your Own Redis.

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About the Author

Educational software development materials.

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Build Your Own Redis

Build Your Own Database

From Source Code To Machine Code

Build Your Own Web Server


The Book
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  • EPUB

  • English

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The Book + Golang code

The book and Golang source code corresponding to each of the chapters in the book.


  • extras
    Code samples in Golang
  • PDF

  • EPUB

  • English

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Bundles that include this book

Bought separately
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Table of Contents

Part I: Simple KV Store

    Files vs Databases
    B-Tree: The Ideas
    B-Tree: The Practice (Part I)
    B-Tree: The Practice (Part II)
    Persist to Disk
    Free List: Reusing Pages

Part II: Mini Relational DB

    Rows and Columns
    Range Query
    Secondary Index
    Atomic Transactions
    Concurrent Readers and Writers
    Query Language: Parser
    Query Language: Execution

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