MySQL

MySQL is a widely used relational database management system (RDBMS). It is the "M" in the LAMP stack and powers huge platforms like Facebook and WordPress.

When to Use

• Web Applications: Standard for PHP/Laravel/Wordpress ecosystems.
• Read-Heavy Workloads: Historically very fast for simple read operations.
• Replication: Huge ecosystem of tools for Master-Slave replication and clustering (Galera, InnoDB Cluster).

Quick Start

-- Upsert (Insert or Update)
INSERT INTO users (id, name) VALUES (1, 'Jane')
ON DUPLICATE KEY UPDATE name = 'Jane';

Core Concepts