Design a REST API service for a book catalog with filtering by author and title. What method would you choose, and what parameters?

For the REST API of the book catalog service with filtering by author and title, I would choose the GET method, as the request is intended to retrieve data without changing state.

Resource path:

GET /books

Filtering parameters are passed via query parameters:

• author — the author's name or part of the name
• title — the book's title or part of the title

Example request:

GET /books?author=Толстой&title=Война

Response — a list of books matching the filters, in JSON format.

Example response:

[
  {
    "id": "123",
    "title": "Война и мир",
    "author": "Лев Толстой",
    "year": 1869
  }
]

This approach aligns with REST principles, allows convenient data filtering, and caching of GET requests.