• REST: Representational State Transfer, an architectural style for APIs promoting statelessness, cacheability, and layered systems.
• RESTful API Design:
  • Use resource-based URIs with HTTP verbs (GET, POST, PUT, DELETE) for CRUD operations.
  • Example:
    • GET /posts - Get all posts
    • GET /posts/:id - Get a specific post
    • POST /posts - Create a new post
    • PUT /posts/:id - Update a post
    • DELETE /posts/:id - Delete a post
• HTTP Methods/Verbs: Define actions on resources (GET, POST, PUT, DELETE).
• Same Origin Policy (SOP): Security measure restricting requests to the same origin (IP/URL).
• CORS (Cross-Origin Resource Sharing): Enables requests from different origins.
  • Use CORS middleware in Express.
  • Configure CORS for specific origins.
  • Understand CORS headers.

Additional Notes:

• Consider using nouns instead of verbs in endpoint paths for better clarity.
• REST is a complex topic, but these notes provide a basic understanding for beginners.

Further Resources:

• REST API Design Best Practices: https://stackoverflow.blog/2020/03/02/best-practices-for-rest-api-design/
• This robinwieruch tutorial on setting up a REST API in Express.
• Express CORS Middleware: https://expressjs.com/en/resources/middleware/cors.html
• Simple REST Example: https://simple.wikipedia.org/wiki/Representational_state_transfer