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Track your spending, categorize expenses, and get insightful summaries—all via a RESTful API.\n\n## Overview\n\nA RESTful Expense Tracker API where users can:\n\n- Register/login.\n- Add, edit, delete, and list expenses.\n- Categorize expenses (food, rent, entertainment, etc.).\n- Get monthly/weekly expense summaries.\n\n## Architecture \u0026 Layers\n\n- Presentation Layer (Controller)\n    - Handles REST API endpoints.\n    - Accepts and returns JSON responses following JSON:API.\n    - Implements HATEOAS links for navigable API responses.\n- Service Layer\n    - Business logic for expense management.\n    - Handles authentication, validation, and security checks.\n    - Communicates with repositories/DAO layer.\n- Repository / DAO Layer\n    - Manages database interactions via JDBC for PostgreSQL.\n    - Optionally implement Redis caching for frequently accessed data like recent transactions or user sessions.\n- Security Layer\n    - JWT authentication \u0026 authorization.\n    - Optional integration of RSA/ECDSA for JWT signing (cryptography practice).\n    - Enforce HTTPS for network connections (TLS setup).\n    - Follows HATEOAS principles and JSON:API standards for responses.\n\n## Core Features\n\n- User Management\n    - Registration/Login with JWT.–\n    - Password hashing (BCrypt) – introduces cryptography.–\n    - Role-based authorization (User/Admin).\n- Expense Management\n    - CRUD operations for expenses.\n    - Categorization and tagging.\n    - Querying by date range, category, or amount.\n- Reporting\n    - Monthly/weekly expense summaries.\n    - Top categories by spending.\n    - Optional: Export reports in CSV/JSON.\n- API Standards\n    - HATEOAS: Include links for next/previous pages, related resources.\n    - JSON:API: Standardize response objects, error handling.\n- Networking \u0026 Security\n    - HTTPS configuration for API server.\n    - Optional: Network client in Java to fetch external exchange rates or budgets.\n    - Secure storage of sensitive data (JWT, passwords, keys).\n\n## Technologies\n\n- Language: Java\n- Build tool: Maven\n- DBMS: PostgreSQL + JDBC\n- Caching: Redis (optional, for performance)\n- Logging: SLF4J + Logback\n- Testing: JUnit5 + Mockito\n- Containerization: Docker for DB and API\n- Security: JWT, BCrypt, TLS, basic cryptography (AES/RSA)\n- Build Tool: Maven","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchronosgit%2Fexpenso","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fchronosgit%2Fexpenso","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchronosgit%2Fexpenso/lists"}