Resources to learn senior development skills

As my career has progressed, the types of problems I face have also progressed - questions like "How should we architect this solution" and "How should we decide between these trade-offs". However, I've struggled to find resources to help me learn these skills. Are there any resources that you would recommend and, in general, how do you continue to learn and progress even as you reach more senior levels of development?

• How to get experience as a software engineer

Resources to learn senior development skills