A Multi-Threaded HTTP Proxy Server with Cache

Features:

Multi-threaded (synchronized using semaphore and mutex)
HTTP GET request support
LRU Cache with time-to-live using a Doubly Linked-List
Traffic caching provides a massive ~96% improvement in response times from avg. ~951ms to <40ms.

Deployment:

compile: make release
run: ./build/release/proxy_server # -nocache: disable cache
config. browser proxy setting to HTTP:https://127.0.0.1:5555 on the client side.