# REST API flash cards: Master level

7 REST API terms at the Master level, as flash cards.

Updated: September 27, 2026

- [Study these as flash cards](https://www.ask-codey.com/decks/rest-api/5/flash)
- [Play Memory with them](https://www.ask-codey.com/games/memory?category=rest-api&level=5)

## Terms in this deck

- [API-First Design](https://www.ask-codey.com/glossary/api-first-design): Agreeing on the API contract before writing the implementation.
- [gRPC](https://www.ask-codey.com/glossary/grpc): A fast, binary, contract-first API style often used between services.
- [HATEOAS](https://www.ask-codey.com/glossary/hateoas): Responses include links to the next possible actions.
- [HTTP/2 and HTTP/3](https://www.ask-codey.com/glossary/http-2-and-http-3): Newer HTTP versions that send many requests at once over one connection.
- [Mutual TLS](https://www.ask-codey.com/glossary/mutual-tls): Both client and server present certificates to prove who they are.
- [Richardson Maturity Model](https://www.ask-codey.com/glossary/richardson-maturity-model): A four-level scale of how fully an API uses REST ideas.
- [Server-Sent Events](https://www.ask-codey.com/glossary/server-sent-events): A response kept open so the server can push a stream of events.

[Read them in the glossary](https://www.ask-codey.com/glossary/subjects/rest-api/master)

Source: https://www.ask-codey.com/decks/rest-api/master