The project is currently functional as a low-level HTTP server, but there are several areas where it can be improved to enhance scalability, maintainability, and production readiness.
Replace all hardcoded values (such as server port and database file path) with an external configuration system. Introduce a configuration file (e.g., config.properties or config.json) to improve portability across different environments.
Implement multi-threaded request processing using a thread pool (ExecutorService) to allow the server to handle multiple client requests simultaneously and improve performance under load.
Introduce a structured logging system to record incoming requests, responses, errors, and system events. This will improve debugging, monitoring, and overall system observability.
Refactor response handling into a dedicated HttpResponse builder system. Standardize response structure, including status codes, headers, and body formatting, to improve maintainability and code clarity.
Replace conditional routing logic with a handler-based routing system. Introduce route mapping to make endpoint management more scalable and flexible.
Integrate a JSON parsing library (such as Jackson or Gson) to enable structured request parsing and response generation, improving compatibility with standard API practices.
Implement a centralized error handling mechanism with proper HTTP status codes (e.g., 400, 404, 500). Provide consistent and structured error responses in JSON format.
Introduce API versioning (e.g., /api/v1/...) to support future backward-compatible updates and improve long-term scalability.
Add unit tests using JUnit for core components such as routing, CRUD operations, and file handling to improve reliability and reduce regression risks.