🔧 Frontend System Design: Communication Protocols & Real-Time Data

Communication Protocols & Real-Time Data — Frontend Interview Guide



Flow diagrams, working explanations, and trade-offs for HTTP, Polling, Long Polling, WebSockets, SSE, WebRTC, gRPC-Web, and GraphQL Subscriptions.








Table of Contents



Overview Mental Model
HTTP (HTTP/1.1 · HTTP/2 · HTTP/3)
Short Polling
Long...