Transaction Management

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Implement robust transaction management with ACID compliance, concurrency control, and error handling. Covers isolation levels, locking strategies, and deadlock resolution.

When to Use

• ACID transaction implementation
• Concurrent data modification handling
• Isolation level selection
• Deadlock prevention and resolution
• Transaction timeout configuration
• Distributed transaction coordination
• Financial transaction safety

Quick Start

Simple Transaction:

-- Start transaction
BEGIN;

-- Multiple statements
UPDATE accounts SET balance = balance - 100 WHERE id = 1;
UPDATE accounts SET balance = balance + 100 WHERE id = 2;

-- Commit changes
COMMIT;

-- Or rollback
ROLLBACK;

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
PostgreSQL Transactions	PostgreSQL Transactions
MySQL Transactions	MySQL Transactions
PostgreSQL Isolation Levels	PostgreSQL Isolation Levels
MySQL Isolation Levels	MySQL Isolation Levels
PostgreSQL Explicit Locking	PostgreSQL Explicit Locking
MySQL Locking	MySQL Locking
Deadlock Prevention	PostgreSQL - Deadlock Detection:

Best Practices

✅ DO

• Follow established patterns and conventions
• Write clean, maintainable code
• Add appropriate documentation
• Test thoroughly before deploying

❌ DON'T

• Skip testing or validation
• Ignore error handling
• Hard-code configuration values