Spring Boot and React together

 Two good examples on how to serve your Spring Boot application with ReactJS:

https://github.com/kantega/react-and-spring

https://dzone.com/articles/spring-boot-and-react-happily-ever-after

CSP (Content-Security-Policy)

 And here's the detailed page on content-security-policy: https://content-security-policy.com/

CORS

This is the best article I read on CORS: https://blog.logrocket.com/the-ultimate-guide-to-enabling-cross-origin-resource-sharing-cors/

BDD vs TDD

 A simple, understandable explanation of Behavior Driven Development (BDD) and Test Driven Development (TDD): https://www.pluralsight.com/blog/software-development/tdd-vs-bdd

How to improve your React App's load time

 Stumbled on this blog post that every react app developer should read: https://www.infoq.com/articles/reduce-react-load-time/

CSS: Position Sticky

A 5-minute read on CSS sticky: https://elad.medium.com/css-position-sticky-how-it-really-works-54cd01dc2d46 

What does npm run do?

 npm run helps to run the scripts defined in package.json, read more: https://stackoverflow.com/questions/49275342/what-npm-run-do