• Built a multi-threaded proxy server in C using pthread for threading and semaphores for concurrency management. • Applied key OS concepts like thread synchronization and mutexes to efficiently handle client requests. • Implemented a cache system with the LRU algorithm, improving data retrieval time and reducing network load. • Strengthened skills in network programming and client-server communication through socket programming. • Gained valuable experience in server architecture and network optimization, focusing on resource management.