Design an Online Library System

Your Library will have different kinds of resources. Available resources should be grouped into categories based on their types. E.g. Reading resources, Audio, Video. Some example of resources would be: - Books - Magazines - DVDs - Blurays - Music CDs - Records - Video Games (CDs) - Etc. There might be multiple copied of one resource available in the library.

New types of resources can be added in the future. The design should allow for addition with a minimum code change

The system should allow users to search in different categories and request checkout. If an item has already been checked out by another user, the user can request to be added to the waiting list and be the next in line to receive the item.

The system will support delivery through 3rd party systems. The library system will send a request to a partner delivery system to pass the item and user information. The delivery company will pick up the item from the library and deliver it to the user.

The Library system will require users to be registered and log in.

Users should be able to view the status of their requests.

The library manager should be able to view the list (online report) of checked-out books and their status: checked-out, delivered to the user, on the shelf, etc.

The library manager should be able to search and view a list of users and also view the borrowed items by a user.