Where to start designing a complex and highly scalable Java web application?

Question

Software design

The task is to create a web application from scratch, and it so happened that I am the only programmer on the project and I have little experience. But, nevertheless, I would like to try to build a good architecture and make an application that will be easy to scale in the future.
At this stage, I know what functionality should be and the technology stack that will be used. For backend - Java-Spring Framework-Maven-PostgreSQL, for frontend, React or VueJs will most likely be used.
I would be grateful for advice on planning and building web application architecture, as well as for useful books and resources on this subject. It is interesting where to start and what to pay attention to in the first place.

Answer 1

You type spring boot rest boilerplate into Google and then you dig into the repository, look at what is there and how, take the most understandable one for you and use it.

Answer 2

From the collection of requirements and the development of technical specifications. And already on the basis of the TK, work out the ChTZ with all the details.