REFERENCE SHELF

Primary sources worth keeping close.

MDN · HTTPProtocol concepts, headers, methods, and status codes.Nginx documentationServer, reverse-proxy, stream, and module references.Let’s Encrypt documentationCertificate automation and renewal guidance.RFC 9110 · HTTP SemanticsThe standards reference for HTTP semantics.RFC 8446 · TLS 1.3The TLS 1.3 protocol specification.