Networking

Handshake, flow control, congestion control, TIME_WAIT, SYN flood, and why QUIC chose UDP

Resolution chain, record types, TTL, GeoDNS, load balancing, failover, and security

Message structure, keep-alive, pipelining, and HOL blocking

Binary framing, multiplexing, HPACK, and server push

QUIC streams, 0-RTT, connection migration, and QPACK

Protocol comparison, practical implications by client type, and CDN/proxy termination

Complete reference for 1xx–5xx status codes

Request, response, security, and caching headers

Edge caching, pull vs push, cache invalidation, origin shield, and video streaming

Protocol comparison, scaling stateful connections, and when to use each

Wire format, streaming patterns, caching tradeoffs, and decision guide