What literature on backend design for mobile applications to read?

Question

Design patterns

Hello Toaster!
Prompt literature on designing a self-written backend for mobile applications or web applications. Design refers to the structure of the backend, the patterns by which it is built, etc.
UPD. I have experience developing on rails, so I understand what you mean. I'm wondering what exactly is under the hood of these frameworks and so on

Answer 1

absolutely agree with longclaps , start with the classics:
Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides - Design Patterns: Elements of Reusable Object-Oriented Software
Martin Fowler - Patterns of Enterprise Application Architecture