Step-by-step MySQL and MariaDB installation on Linux, mysql_secure_installation, creating databases and users, basic SQL commands, remote access configuration, and performance tuning.
PostgreSQL installation on Ubuntu/Debian and RHEL/CentOS, creating users and databases, basic SQL commands, remote connection setup, and backup strategies. Step-by-step guide.
Redis and Memcached installation on Ubuntu/Debian, basic commands, persistence settings, TTL configuration, Redis vs Memcached comparison, and application integration.
Step-by-step phpMyAdmin installation on Apache and Nginx, SSL configuration, user management, IP restrictions, and security hardening best practices.
Set up database connection pooling with PgBouncer and ProxySQL, MySQL and PostgreSQL pooling, Node.js/Python/PHP integration, and performance optimization tips.