Data Replication Setup

Table of Contents

• [Overview](#overview)
• [When to Use](#when-to-use)
• [Quick Start](#quick-start)
• [Reference Guides](#reference-guides)
• [Best Practices](#best-practices)

Overview

Configure database replication for disaster recovery, load distribution, and high availability. Covers master-slave, multi-master replication, and monitoring strategies.

When to Use

• High availability setup
• Disaster recovery planning
• Read replica configuration
• Multi-region replication
• Replication monitoring and maintenance
• Failover automation
• Cross-region backup strategies

Quick Start

PostgreSQL - Configure Primary Server:

-- On primary server: postgresql.conf
-- wal_level = replica
-- max_wal_senders = 10
-- wal_keep_size = 1GB

-- Create replication user
CREATE ROLE replication_user WITH REPLICATION ENCRYPTED PASSWORD 'secure_password';

-- Allow replication connections: pg_hba.conf
-- host    replication     replication_user   standby_ip/32    md5

-- Enable WAL archiving for continuous backup
-- archive_mode = on
-- archive_command = 'test ! -f /archive/%f && cp %p /archive/%f'

Reference Guides

Detailed implementations in the references/ directory:

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