Architecture Overview

High-level system design for the backup tool

System Architecture

Frontend Layer

Dashboard View
Overview, stats, recent backups

Backup View
Jobs, sources, schedules

Settings View
Config, storage, notifications

↓ REST API ↓

Backend Layer (Python)

API Server
FastAPI/Flask

Backup Engine
Core logic

Scheduler
APScheduler

Source Adapters
SSH, DB, Local

↓ Persistence ↓

Data Layer

SQLite Database
Jobs, sources, history, config

File Storage
Backup archives

Source-agnostic: Adapter pattern for different backup sources (local, SSH, future cloud)
Job-driven: Everything is a job - manual or scheduled, full or incremental
SQLite for simplicity: Single file database, no external DB server needed
REST API: Clean separation between frontend and backend
Extensible: Plugin architecture for new source types and storage backends