Introduction A proxy acts as a gateway that accepts client requests, optionally transforms, inspects, or caches them, forwards them to origin servers, and returns responses. Proxies are used for load balancing, caching, security (WAF, filtering), identity translation, audit/logging, and protocol mediation. Building a proxy with Reflect 4 focuses on leveraging Reflect’s features (event-driven I/O, middleware pipelines, protocol support, plugin extensibility, and observability) to deliver a secure, scalable, and maintainable service.