I posted this elsewhere in this thread:

https://component.gallery/

Great meta resource for building UI components.

- Java Design Patterns

https://java-design-patterns.com/

Here be dragons. People trying to pattern-match their problems to design patterns can waste a lot of time and effort over many years. Use responsibly.

Microsoft's cloud design patterns are quite well-written IMO, if you're into that kind of thing

https://learn.microsoft.com/en-us/azure/architecture/pattern...

The OG site for patterns is of course the Portland Pattern Repository. I believe Ward Cunningham invented wiki for this purpose initially!

https://c2.com/ppr/

I think it is difficult to oversell the bob nystrom game patterns book

https://gameprogrammingpatterns.com/contents.html

I’ll make a plug for aep.dev, which is a collection of API design best practices and assorted tooling

Oh here's a resource for common "idioms" across programming languages

https://programming-idioms.org/

https://www.deceptive.design/

+1 for refactoring.guru, find it really useful whenever i want to refactor some pre-existing code. Only wish they had a physical book!

Useful links. Thank you.