How can I filter and search the site? Is it frontend or backend?

Question

Backend

I'm just learning to develop websites. Advise me how to make logic for filtering courses by their duration, language and other parameters so that the path changes depending on the selected parameters? For example, https://www.educative.io/explore?search_string=&sk...

Answer 1

Usually the backend, since it is not rational to send large amounts of data to the front and process it there.
But in some cases, when the amount of data is small, it may be easier to do it on the front.