Restaurant POS Backend Showcase (Spring Boot)

Production-grade backend for a restaurant Point-of-Sale system, built to handle secure authentication, role-aware operations, and complete order workflows across menu and table management.

Tech Stack

• Java 21
• Spring Boot 3
• Spring Security + JWT
• Spring Data JPA
• PostgreSQL
• Redis Cache
• OpenAPI/Swagger (springdoc-openapi)
• Maven
• Docker + Docker Compose

Key Features

• JWT-based login and stateless authentication (/api/auth/login)
• Role and permission management for operational users
• Menu item CRUD with area-based retrieval
• Table area and table lifecycle management
• End-to-end order operations:
  • create orders
  • generate KOTs
  • attach payments
  • filter and fetch order details
• Interactive API documentation via Swagger UI

API Modules

• AuthController -> /api/auth
• UserController -> /api/users
• MenuItemController -> /api/menu-items
• TableAreaController -> /api/tableArea
• TableListController -> /api/tableList
• OrderController -> /api/orders

Architecture (High Level)

Client (Web/App) -> Spring Boot REST API -> PostgreSQL
-> Redis Cache
-> JWT Security Filter Chain

Engineering Focus

• Clear, consistent REST endpoint design
• Security-first request filtering and authorization with JWT + Spring Security
• Layered architecture: controller -> service -> repository -> entity
• Caching for improved read performance on repeated access paths
• Modular structure designed for easy extension (analytics, reporting, multi-branch support)

Code Access

This repository is intended for showcase purposes.
The complete implementation is maintained in a private repository and can be shared upon request for recruiter/interviewer evaluation.