Can you explain the principle of pagination and in which cases it is used?

Pagination is used to display large data sets in parts, so as not to load and show everything at once. This improves performance and user convenience. For example, in a news feed app, you can load 20 records at a time, loading more as you scroll.

How it works:

• The client requests a specific page (for example, page 2) with a limit on the number of items (for example, 20).
• The server returns only these 20 items.
• If necessary, the client requests the next page.

This reduces network and memory load, and improves interface responsiveness.