Final Release Distributed Spotify Protocol

Stable Release of Distributed Spotify TCP Server

This release marks the completion of the Module 2 architecture for the Distributed Systems project. It successfully implements a custom binary protocol using Java Object Serialization.

Key Technical Achievements

• Object-Oriented Network Protocol: Replaced raw text streams with serialized ProtocolMessage DTOs for structured communication.
• High Concurrency (ExecutorService): Implemented a Thread Pool to manage multiple simultaneous client connections efficiently without exhausting system memory.
• Thread-Safe Data Structures: Engineered a custom ConcurrentMultiMap utilizing ConcurrentHashMap and non-blocking ConcurrentLinkedQueue to allow atomic playlist modifications.
• Robust Security: Integrated a ConnectionManager to provide strict IP rate-limiting, preventing brute-force login attempts and DDoS-like connection spam.
• Deadlock Prevention: Ensured safe initialization of ObjectOutputStream prior to ObjectInputStream to prevent thread blocking during handshake.