Difference between Microservices and Monolithic Architecture

Hello guys, if you are preparing for Microservice developer interview or just a JAva developer interview where Microservices skills are needed then you must prepare with the difference between Monolithic and Microservices articles. It's one of the popular Microservices interview questions and often asked on both face-to-face round of interview or telephonic interviews.  Microservices and monolithic architectures are two of the most common approaches to building software systems. While both approaches have their benefits and drawbacks, they differ significantly in terms of their architecture, development, deployment, and maintenance.

Top 20 Spring Cloud Interview Questions and Answers for 3 to 5 Years Experienced [2025]

Hello guys, if you are preparing for Spring and Microservice developer job and need Spring cloud interview questions then you have come to the right place. Earlier, I have shared interview questions on Spring Boot, Spring MVC, Spring Security, Spring Testing and Spring Core and in this article I am going to share common Spring Cloud questions for Java and Microservice developers. If you have used Spring Cloud in your project then you can answer all of these questions easily but if you struggle to answer any of these questions then you can always go back and join one of these best Spring Cloud courses and best Microservice courses to learn and revise essential Spring Cloud concepts. 

What is the delegating filter proxy in Spring Security? How it works?

The Delegating filter proxy or DelegatingFilterProxy is a spring aware class which implements javax.servlet.Filter interface and used to activate Spring security in a web application. Since Filters are created and maintained by Servlet or Web Container this filter is declared in web.xml and it is configured to process request for all URLs, which means every request and response pass through this filter. In other words, DelegatingFilterProxy works as a proxy between Web Container and Spring Container. It passes all request and response to Spring Security to implement security constraints e.g. performing authentication or authorization.