Microservices Interview questions | Interview Preparation 

Agree..100%

Glad you liked it!

Sure! Noted! New video i am trying to do. Stay tuned!

I ran it with 2x still it was slow for me

@componentScan!

Thanks for feedback. It will be re uploaded soon.

@Prince Pdf is not yet there. But point noted. Stay tuned!

@Manish : MicroService is an architecture. In java, you can use spring boot to develop it. So, you can use Mockito or TestNG for junit test. If you are testing api endpoints, request and response in REST, you can use Swagger, RestAssured. If you are doing automation for web based UI, you can use Protractor.

@@ByteProgrammingVedantHarish Is there any tool like "CYPRESS" also ?

No.. ur wrong.. if hit the call for c micro service.. no response from c what will be the response.. u should implement fall back method for c

@Sri Sushma Which company asked you this ? It is one of rare questions asked in spring boot or spring interview. The interviewer's perspective might be whether you know about different types of filter in component scanning. Let understand like this : 1. When we use @SpringBootApplication -> it provides us @ComponentScan. 2. By default, ComponentScan will auto-scan all classes annotated with stereotype annotation in root package and its sub-package. 3. Inside @ComponentScan, we can pass filter like includeFilters = @ComponentScan.Filter ("filter_type", "filter_value") to scan classes matching with given filter. 4. Common available filters are : i) FilterType.ANNOTATION ii) FilterType.ASPECTJ iii) FilterType.REGEX

@@ByteProgrammingVedantHarish I know this part. But is the question framed even correct for this answer ? I honestly feel it's not a right question to ask. The question was asked by a famous portlet development company

@@sushma6314 In general, Questions frame should be to the point. I partially agree with you here. This question is from a product based company, i am assuming! Let's understand this through an example : Question : How to optimize your spring boot api? As an interviewer, depending on your "project experience", "total experience" , "role for which interview", and finally " project requirement". I would be looking for below points : 1. unchanged content or constant value : Make static 2. Use of final. 3. Minimal object creation. 4. Minimal code duplication If you look at above points, these are coming from java itself. Nothing from Spring boot. So, what to look in spring boot ? 1. Graceful start up of spring boot because you might be using default autoconfiguration. (Another way of asking the question, you got from interviewer. ) 2. More than required db calls. 3. Unnecessary dependency imports 4. Use of CrudRepository or JpaRepository for your use case. You can think of any other point also. Hope this view point helps you for your future interviews.

@RaviKumar : Yes. Microservice is an architecture. You can develop microservice with any technology and any web-service. With Rest and spring boot, you can easily develop microservice.

@@ByteProgrammingVedantHarish can we dev microservices with only spring without spring boot?

@@Ravikumar-gj6qw In view, ideally you should not. Main crux of an api being microservice is "standalone, production ready".

@@ByteProgrammingVedantHarish I didn't get you bro

@Ravikumar Any specific scenario you faced?

@Ravikumar why dubbing is hard in monolithic even there is only one application, In case o f micro-service, how will you debug other micro service which hold other team, and how will you get that micro-service logs, and how will you debug other service which written in dot net and your service in java, when if you don't have log access of that micro-service ,