Portabase: A Lightweight Self-Hosted Database Backup Solution

Portabase is a self-hosted database backup and restore tool supporting PostgreSQL, MySQL, and MariaDB. It uses a central server for management and lightweight agents that operate in outbound pull mode, eliminating the need to expose databases to the internet. The platform features three retention strategies (fixed count, time-based, GFS rotation), supports S3-compatible storage backends, and integrates with notification platforms like Slack and Discord. The central server is built with Next.js 16 and PostgreSQL, while agents have been refactored from Python to Rust for better performance and a 4x smaller Docker image.