Learn REST APIs
Resource-oriented APIs expose identifiers and representations through HTTP semantics. Stateless requests carry their processing context.
Read each short explanation, work through the example, then answer a pop quiz. Every answer explains the reasoning. Incorrect answers unlock a fresh question on the same idea; the full lesson contains ten questions.
01Understand the basics
Ready to learnRepresentational State Transfer (REST) describes constraints for networked systems. A practical resource API uses stable URLs, HTTP methods and clear representations. Each request should carry the context needed to process it; the server should not rely on an earlier request to know what the caller means.
02Design collections
Ready to learnA collection can contain more records than one response should return. Pagination splits the result into manageable pages. Stable ordering and a documented cursor or offset make traversal predictable.
Try a different value
03Keep the contract clear
Ready to learnValidate input, authorise resource access, and return a consistent error shape. A correct-looking URL does not prove that the caller may access the resource.
You’ve practised all three sections.
First-attempt understanding and later practice are shown separately. Keep practising with the related tools or continue through the suggested path.
Put it to work
Apply what you’ve learned using the related tools.