Spring / Spring Webflux Interview questions

How to handle errors in Spring WebFlux?

Handle Errors With,

onErrorReturn (), to return a static default value whenever an error occurs.
onErrorResume (), to compute a dynamic fallback value, (or) execute an alternative path with a fallback method, (or) Catch, wrap and re-throw an error.
Global Level by customizing the Global Error Response Attributes and implement the Global Error Handler.

More Related questions...

What is Reactive Programming? What is Spring Webflux? Is Spring WebClient thread safe? Is Spring RestTemplate deprecated? What are the benefits of using Spring Webflux? What is bodyToMono? Difference between Mono and Flux. How to handle errors in Spring WebFlux? Difference between Spring MVC @async and Spring Webflux? What is Reactor netty? What are router functions? What does Mono.defer() do? When should we choose Reactor over RxJava? How to handle an exception in a Spring Webflux based application? What is bodyToFlux? Disadvantages of Using Reactive Streams. Difference between the Web client and Web Test Client? Can we use SpringMvc and webflux together? What are the main components of Spring Webflux? What is the Flux API? What is a Publisher? Explain its main interfaces. Explain the difference between hot publishers and cold publishers. Explain throttling. What is Backpressure and how does it relate to Flux? Can you use a Flux to represent a single result? Why would you use Mono instead? What does "Nothing happens until you subscribe" mean? How do you convert a Flux into a Mono>? What is the difference between flatMap, concatMap, and switchMap? How do you handle errors in a Mono/Flux pipeline? When should you use Schedulers.boundedElastic()? Difference between Mono.just() and Mono.defer(). Difference between Mono.fromCallable and Mono.fromRunnable. Difference between Project Reactor and WebFlux.

Show more question and Answers...

Apache Shiro Interview questions

Comments & Discussions

Spring interview questions 48 Spring module questions 11 Spring Beans 64 Spring Interview questions II 47 Spring batch Interview questions 60 Spring MVC Interview questions 55 Spring Data Access 64 Spring AOP 20 Spring Integration 15 Spring Boot 122 Spring cloud 32 Spring Security 24 Creating simple Spring boot application using Eclipse and Gradle Spring boot autorestart and autoreload demo in IntelliJ idea using devtools Running Angular Application using JavaFX Spring boot: Difference between CommandLineRunner and ApplicationRunner Spring boot convert HTTP Request JSON To XML using Jackson Spring boot convert XML HTTP Request To JSON using Jackson College Assignment Help That Helps You Get More Free Time and Better Grade Spring Webflux Interview questions 33 Apache Shiro Interview questions 1 Spring Retry Interview Questions 40 Spring AI interview questions 44 Spring Boot 4 Basics Interview Questions 40 Spring7 basics Interview questions 40 Spring7 Intermediate to Advanced Interview questions 40

Recently added questions

What is parameter binding in MyBatis? How do you integrate MyBatis with Spring Boot? What is a SqlSessionFactory in MyBatis? How do you write a basic SELECT statement in MyBatis? What is the difference between #{} and ${} in MyBatis? What is MyBatis-Spring? What is MyBatis? What is the difference between MyBatis and Hibernate? What is a Mapper interface in MyBatis? What is a Mapper XML file? What is result mapping? What are the supported statement types in MyBatis? What is a resultMap? How do you configure a data source in MyBatis? What is the mybatis-config.xml file used for? Explain how pagination is typically implemented in MyBatis? What is the purpose of MyBatis? What are the key features of MyBatis? What is a SqlSession in MyBatis? What is dynamic SQL in MyBatis?

	Interviews Questions Java Spring Hibernate DevOps Testing API BigData Web Erlang AI Database Integration Cloud Python Scala Tools Golang SAP	About Javapedia.net Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples. This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company. Follow Javapedia updates
	contact: javatutorials2016[at]gmail[dot]com
Kindly consider donating for maintaining this website. Thanks.
	Copyright © 2026, javapedia.net, all rights reserved. Privacy Policy · Terms of Service.