Build Your Own Database From Scratch: Persistence, Indexing, Concurrency
by James Smith
- Length: 137 pages
- Edition: 1
- Language: English
- Publisher: Independently published
- Publication Date: 2023-04-18
- ISBN-10: B0C2RCMC1D
- ISBN-13: 9798391723394
- Sales Rank: #72268 (See Top 100 Books)
Databases are not black boxes. Understand them by coding your own from scratch!
A walkthrough of a minimal persistent database implementation. We start with a B-Tree, then add a new concept with each chapter, and eventually go from a simple KV to a mini relational DB.
Covers three important topics:
- Persistence. How not to lose or corrupt your data. Recovering from a crash.
- Indexing. Efficiently querying and manipulating your data. (B-tree).
- Concurrency. How to handle multiple (large number of) clients. And transactions.
00. Introduction 0.1 What is This Book About? 0.2 How to Use This Book? 0.3 Topic One: Persistence 0.4 Topic Two: Indexing 0.5 Topic Three: Concurrency 01. Files vs Databases 1.1 Persisting Data to Files 1.2 Atomic Renaming 1.3 fsync 1.4 Append-Only Logs 02. Indexing 2.1 Key-Value Storage and Relational DB 2.2 Hashtables 2.3 B-Trees 2.4 LSM-Trees 03. B-Tree: The Ideas 3.1 The Intuitions of the B-Tree and BST 3.2 B-tree and Nested Arrays 3.3 B-Tree Operations 3.4 Immutable Data Structures 04. B-Tree: The Practice (Part I) 4.1 The Node Format 4.2 Data Types 4.3 Decoding the B-tree Node 4.4 The B-Tree Insertion 05. B-Tree: The Practice (Part II) 5.1 The B-Tree Deletion 5.2 The Root Node 5.3 Testing the B-Tree 5.4 Closing Remarks 06. Persist to Disk 6.1 The Method for Persisting Data 6.2 mmap-Based IO 6.3 The Master Page 6.4 Allocating Disk Pages 6.5 Initializing the Database 6.6 Update Operations 07. Free List: Reusing Pages 7.1 Design the Free List 7.2 The Free List Datatype 7.3 The Free List Implementation 7.4 Manage Disk Pages 08. Rows and Columns 8.1 Introduction 8.2 Data Structures 8.3 Point Query 8.4 Updates 8.5 Create New Tables 09. Range Query 9.1 B-Tree Iterator 9.2 Data Serialization 9.3 Range Query 10. Secondary Index 10.1 Index Definitions 10.2 Maintaining Indexes 10.3 Using Secondary Indexes 11. Atomic Transactions 11.1 KV Transaction Interfaces 11.2 DB Transaction Interfaces 11.3 Implementing the KV Transaction 12. Concurrent Readers and Writers 12.1 The Readers-Writer Problem 12.2 Analysing the Implementation 12.3 Concurrent Transactions 12.4 The Free List 12.5 Closing Remarks 13. Query Language: Parser 13.1 The Grammar 13.2 Operator Precedence and Recursion 13.3 Parsing Expressions 13.4 Parsing Statements 14. Query Language: Execution 14.1 Introduction 14.2 Expression Evaluation 14.3 Fetching Rows 14.4 Executing Statements 14.5 Further Steps
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