Chapter 8. Lazy Loading
Angular is built with the focus on mobile. That's why we put a lot of effort into making compiled and bundled Angular applications small. One of the techniques we use extensively is dead code elimination, which helped drop the size of a hello world application to only 20K. This is half the size of an analogous Angular application-an impressive result!
At some point, however, our application will be big enough, that even with this technique, the application file will be too large to be loaded at once. That's where lazy loading comes into play.
Lazy loading speeds up our application load time by splitting it into multiple bundles, and loading them on demand. We designed the router to make lazy loading simple and easy.
