13 Using WebClient to make API calls - Spring Boot Microservices Level 1

In this video, we'll switch to using WebClient for making API calls. We'll explore how WebClient uses reactive programming constructs for fetching API response.

Workshop recorded live on Feb 9, 2019.

Course: Spring Boot Microservices Level 1 - Communication and discovery

This course introduces you to building microservices with Spring Boot and Spring cloud. This is Level 1 - start here if you are completely new to building microservices in Spring.

[bazar]

Sync and Async are like in the post office.
Sync - When you go to take your package you wait inline till your number comes and
then you are served (wasting time and stopping all your daily tasks).

Async - you get your number via SMS and you keep with the rest of the
day and when your turn arrives you get a message on your phone to come
and get your package.

[paracha]

He is really good teacher. Very unique style of explaining.

[Guillotineman]

like all your videos, right to the point, super well explained. QUALITY!

[ltmikepick]

These days when workshops could be made with other people in the same room....So great...So good...

[eirikbremnes]

Awesome tutorial....you're great as always! Txs :)

[ujjwolbhandari]

Wonderful job! Thanks a lot for such a clear explanation.

[fernandonatividade]

Awesome content! It's perfect for who wants to learn a little bit about microservices

[DevCurioso]

Cant wait for the workshop with WebClient =D

[nilendru]

Learned as well as enjoyed all the videos in this series. In video 13 at 11.30, I think you can relate it with callable Future in java executer framework wherein we get the actual object returned by call after thread execution finishes by future.get () method in asynchronous way.

[GuitarreroDaniel]

Amazing explanation, thank you very much. This seems easier than Retrofit.

[haimmichalashvili]

You are awsome, thanks for taking care of teaching us the new way of WebClient instead of using the deprecated RestPattern :)

[imranshaikh]

Very easy and straightforward, i like the way

[cihanseven]

Excellent work, you are a good man and I wish you the best.. Thank you very much.

[NavedKhan-jeel]

Awesome Kaushik, You are doing a great job.

[kamp]

I've a question, what if we've a kafka topic that we consume from and want to make a rest post, and the service that produces to this is faster than the rest post request. Will a webclient work faster than a regular resttemplate and will the service still have to wait for the response before committing offsets in the kafka topic?

[Manuel-ugfg]

You couldn't have explained it better.
Thanks!

[rajivjha]

Hi Kaushik, You have AsyncRestTemplate already for async calls . Can you please explain us the difference between ASyncRestTemplate Vs WebClient ?

[pramoddwivedi]

Your are great Sir, the way of teaching is awesome

[fsociety]

Shouldn't be the return value of .build() from the web client builder specified as @Bean ? as invoking .build() will create instance every time a new request comes?

[narendra_ingle]

What happens when we have multiple class into service stub and we got request as string then how can we mapping class name ?
bodyTomono(?)