Spring Boot MicroServices Course: Implementing Catalog Service APIs

[@srikanthreddy6991]

Please continue quality content like this sir. Awesome real world content.. rarely we see this kind of content

[@prasanthsanjeevi2563]

Tons of thanks 🙏 for giving the valueable content for free

[@Amarpatil-zg2tz]

Great Content! Ur All videos are full of knowledge. Thanks. Waiting for more content like this!!!

[@reallylordofnothing]

I cannot repeat enough (as I have done in twitter too) This is great content. This is great content. This is great content. This was a great introduction to testing. This video will stand out for the focus on tests for those not used to testing frameworks in their firms. I will be more than happy to join and pay once I hit the paywall on video no 6 or 7. (sorry for these spam-like messages)

[@hamzaouni3009]

Thanks a lot for this great content. I prefer the use of TDD as it offers a more engaging approach to software development

[@BlankSlate5364]

Hi Siva, thanks for the valuable content. Can we use cucumber, karate & test containers to write integration test?. what's your thought on using this combination instead of rest assured & test containers

[@sujayrj]

The series is really good, please keep it coming. What is the code complete feature you are using in IntelliJ? Is there a separate plugin that is needed? Thanks again!

[@sivalabs]

I have GitHub Copilot plugin which gives me autocompletion suggestions. But it is a paid service. Recently Intellij IDEA also added Line Completion support, maybe you can try it also.

[@geovannymendozagonzalez9119]

Hi Siva excellent, this series of videos has really helped me a lot. I'm curious because you implemented the ProductNotFoundException in the Controller and not in the service. I have read in some books that it is better to leave that functionality to the service.

[@sivalabs]

From the Service, we can indicate to the client the absence of the Product for the given code in 2 ways. Either by returning Optional or by throwing ProductNotFoundException. I prefer to return Optional.empty() if the product doesn't exist because 1) It is not actually an Exceptional situation, you are looking up data that doesn't exist. 2) Returning Optional enables the client(in our case Controller) to use Java Streams API to take further actions in stream processing style using map(..) or orElse(..). If we throw an Exception we can't use stream processing style logic for further action.

[@sakthinivas1840]

Thanks for your video! Test class for ProductService is not been created. Also, is unit/slice test required for controllers? currently there is integration test available for the same.

[@sivalabs]

There is no complex business logic in ProductService and the existing logic is already covered by the integration tests. So, didn't write any unit tests for ProductService class.

[@sujayrj]

@Siva - The Test written for Controller, was it Slice test or Integration test?

[@sivalabs]

The test written using @WebMvcTest is a slice test and @SpringBootTest annotated tests are integration tests.

[@harshak1616]

why are we passing repository or any service in constructor parameter instead of autowiring ?

[@sivalabs]

Because Field Injection is not recommended. To learn more see kzbin.info/www/bejne/oaDbpmhnmtZ3n7M

[@harshitaahuja6870]

Sir, Which K8s you'll use to deploy this project? I mean EKS, GKE, or Kubeadm at EC2? Will you use ingress and all with secret-manager/HarshicorpVault and certificate-manager for https? I want to know how much production ready course it'll be. Kindly reply. So far it is looking promising. Thanks anyway.

[@sivalabs]

In this fee course I am going to deploy on the local KinD cluster only.

[@harshitaahuja6870]

How many total videos it'll take sir? And in how many days? Can we complete the series by end of this April?

[@sivalabs]

@@harshitaahuja6870 There are still 12 to 15 videos to be recorded. Mostly by mid-May all the videos will be published.

[@TheDummyHead]

Hey. What would be the reason behind using a sequence that increments by 50? I've read that it's an optimization technique used in high concurrent scenarios to improve performance.

[@sivalabs]

Hi, this is an optimization done by Hibernate to reduce the nextval(sequence). For more detailed explanation see ntsim.uk/posts/how-to-use-hibernate-identifier-sequence-generators-properly

[@TheDummyHead]

@@sivalabs thank you, very good article

[@AnuragMishra-ws4zc]

Great ❤

[@lts8683]

many thanks

[@reallylordofnothing]

Are you using postman on web or desktop?

[@sivalabs]

I am using Postman Desktop Client.

[@sakthinivas1840]

For some reason, the DML script V2__add_books_data.sql was not executed, only the create product table script was executed. Any idea how to solve this?

[@sivalabs]

Can you share the project on GitHub, I will check?

[@sakthinivas1840]

@@sivalabs Never mind, I got it fixed, seems due to file naming convention, thanks

[@bijeesraj007]

This is Gold 🏆