Web Development Intermediate
Web Development Intermediate
Lesson Promise
By the end of this lesson, you will know how to design REST APIs with proper status codes and versioning, manage client and server state correctly, and make POST requests safe to retry.
Narration Draft
"HTTP is more than just GET and POST. Each method has semantics around idempotence, safety, and cacheability. REST APIs organize data into resources with predictable URLs. And state — whether in the browser, on the server, or in cookies and localStorage — must be managed carefully to avoid bugs that only appear in production."
Visual Sequence
- Scene 1 — REST resource URLs: /api/v1/users vs /api/v1/users/42
- Scene 2 — State storage comparison: localStorage vs sessionStorage vs cookies
- Scene 3 — Idempotent vs non-idempotent request trace (Trace:
idempotent-post-request-trace) - Scene 4 — Retry safety flowchart (Diagram:
idempotent-api-flow)
Companion Material
- Article: REST API Design
- Article: State Management
- Article: API Semantics and Versioning
- Trace: Idempotent POST Request
- Diagram: Idempotent API Flow
- Learning Path: Web Development Intermediate
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