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#protocol (4)

Concepts (3)

APIs

A versioned contract between two pieces of software — endpoints, verbs, payload shapes, errors, and auth — that decouples a caller from an implementation.
http contract protocol web rest graphql rpc http3 llm attestation web-researched

DNS

The hierarchical, cached, globally-distributed naming system that turns human-readable hostnames into IP addresses, mail routes, service endpoints, and trust anchors.
networking protocol infrastructure web-researched

HTTP

The request/response protocol that carries almost every API, page, and download on the modern internet — methods, status codes, headers, caching, and three wire formats (HTTP/1.1, HTTP/2, HTTP/3).
web protocol api rest network tcp quic tls web-researched

Cheat sheets (1)

typing — Advanced Type Hints

Go beyond list[int] and str | None. Covers Protocol, TypeVar bounds, ParamSpec, Concatenate, Self, Annotated, TypedDict with NotRequired/Required, TypeAlias, TypeGuard, TypeIs, cast, assert_type, and reveal_type.
python typing types stdlib mypy generics protocol