Gain insights into building Reactive Web Applications with Spring Boot 2 and Spring WebFlux, from database integration to front-end. Explore Reactive vs MVC, performance, and deployment with Docker.   


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This course is your guide to using Spring Boot 2 and Spring WebFlux to create Reactive Web Applications. 

You will learn how to build a full-reactive system from the database (MongoDB reactive) to the front-end (Angular), using a Reactive programming strategy leveraged by Spring WebFlux, with the simplicity offered by Spring Boot 2. 

Beyond that though, you will be able to compare the Spring WebFlux with the standard MVC approach as well, covering the main aspects such as simplicity, performance, user experience, and more.

The last part of the course ties it all up by teaching you to run the application using Docker compose. By the end of this course, you will have a great new skill for your resume and you’ll be able to build your own projects using the full Reactive stack.

Full Reactive Stack: Spring Boot 2 & Spring WebFlux

# Suitability

You should evaluate if a full reactive stack fits your case. Do you require SQL queries to complete your web response? Bad news: reactive support for relational databases are still in a very early stage. 

Look also at the client's side. Can your web clients switch to a reactive approach? If the answer is no, then the list of advantages you'll get becomes smaller.



# Testing

Writing unit and integration tests for reactive streams with WebFlux might be tricky. The [Project Reactor documentation](https://projectreactor.io/docs/core/release/reference/#testing) is a good starting point, showing how you can use, for example, `StepVerifier` to check that your Fluxes and Monos work the way you want. 

You can also find examples of unit tests in our backend application's [GitHub repository](https://github.com/mechero/full-reactive-stack/tree/master/spring-boot-reactive-web/src/test/java/com/thepracticaldeveloper/reactiveweb/controller).

An extra inconvenience is that there isn't a big community of developers so you can't see examples of testing with WebFlux yet. Besides, the tests are not as readable as the MVC ones, and they are also harder to debug if something goes wrong.


Conclude this course with a holistic view of the pros and cons of shifting to Spring WebFlux.

Reactive Web

Full Reactive Stack Backend

Connecting Angular With the WebFlux Backend

Conclusion

Appendix

Suitability, Testing, and Conclusions

Suitability

Testing