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Reactive GraphQL Masterclass For Java Spring Boot Developers (Udemy.com)

Boost API Performance and Scalability using Efficient Data Fetching with GraphQL and Spring Boot

4.7
317 reviews

Created by: Vinoth Selvaraj

Last updated September 2026

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What you will learn

  • Gain a deep understanding of GraphQL's principles and best practices.
  • Leverage Spring WebFlux to create efficient and scalable GraphQL APIs.
  • ptimize data fetching and reduce network overhead with GraphQL.
  • Implement real-time updates with GraphQL subscriptions.
  • Robust Error Handling and Input Validation
  • Hands On - Learn through practical exercises and real-world examples.
  • Acquire in-demand skills for building modern, efficient APIs.

How it compares

Against the other 815 rated Udemy courses in Web Development on CourseDuck:

  • Rating4.7 out of 5higher than 86% of them
  • Reviews317#364 of 816 by number of reviews
  • Length12.7 hourslonger than 67% of them
  • Last updatedSeptember 2026more recently than 97% of them

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Course Description

Master GraphQL and Spring WebFlux for Building Reactive Microservices

This comprehensive course equips you with the skills to build modern, reactive microservices using GraphQL and Spring WebFlux. You'll gain a deep understanding of GraphQL's query language, schema design, and seamless integration with Spring WebFlux. Explore advanced topics like real-time subscriptions, robust input validation, and effective testing strategies. Through hands-on exercises and practical examples, you'll develop the expertise to architect powerful and efficient microservices.

Course Highlights:

  • GraphQL Fundamentals: Demystify GraphQL's principles, query language, and schema design. Understand its advantages over traditional REST APIs.

  • Advanced GraphQL Concepts: Explore subscriptions for real-time updates, input validation, error handling, and effective testing strategies.

  • Building with Spring WebFlux: Learn how Spring WebFlux empowers the development of reactive GraphQL microservices.

  • Hands-on Learning: Develop practical skills through exercises and real-world examples.

  • Architecting Robust APIs: Gain expertise in designing and implementing robust GraphQL APIs, addressing the N+1 problem and optimizing data fetching.

  • Testing Strategies: Master the art of integrating testing for GraphQL APIs, covering queries, mutations, and subscriptions.

By the end of this course, you'll be able to:

  • Confidently utilize GraphQL for building APIs.

  • Design and implement effective GraphQL schemas.

  • Leverage Spring WebFlux for reactive microservice development.

  • Build real-time data applications with GraphQL Subscriptions.

  • Implement robust input validation and error handling mechanisms.

  • Effectively test your GraphQL APIs, ensuring their functionality and performance.
Read More All Levels All Levels product length iconTime: 12.7h

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Instructor Details

Vinoth Selvaraj

I am a Principal Engineer with certifications as an AWS Certified Solutions Architect Associate, Certified Kubernetes Application Developer, and Google Cloud Engineer. I am passionate about software development, with a focus on building scalable, high-performance distributed systems and modern AI-powered applications.

My areas of interest include Java, Spring, Agentic AI, AI Agents, MCP (Model Context Protocol), Observability, Cloud Computing, and Distributed System Design. I enjoy simplifying complex engineering topics and creating practical, industry-focused courses for developers.

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Reviews

4.7

317 ratings on Udemy

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By Andres Marrero on 3/9/2026

El curso ha sido muy completo, cubre muchos puntos importantes con detalle y profesionalismo. Excelente aprendizaje.

By Aditya Sharma on 10/11/2025

This is My 5th course from Vinoth and as expected it exceeds expectations. So much details and practical oriented with very good Hands-on examples.

By S.Sai Brinda on 8/17/2024

Great course for beginners!!!. I like way the course is structured

By Mahesh Babu Kamineni on 6/15/2024

provide the material

By Rafael Navas Ruiz on 6/9/2024

It's a great and complete course. If you are willing to learn GraphQL in details from the Java/Spring perspective this is the definitive one.

By Rodrigo Mena on 2/27/2024

Like every course by Vinoth, this course does not disappoint. Excellent explanation and extensive coverage of the topic. Let's move on to the next one...

By Alex SIEYADJEU on 7/7/2023

Tout ce qu'il faut savoir sur graphql, c'est juste parfait Il ne me reste plus qu'à explorer le schema registry federation pour des cas plus complexes

By Marko Marinkovic on 1/1/2023

If you want to learn graphql(especially in combination with Spring WebFlux), this is the right place. Absolutely amazing course, learned a lot. Thanks

By Artem Shyshkin on 11/2/2022

The best Udemy course on GraphQL with Spring Boot! I like the way Vinoth explains material. Every feature of GraphQL goes with "Problem-Solution" conjunction. First we discuss problem. Then we make solution. So it come totally clear for what some feature was designed.

By Eder Catini on 10/12/2022

Amazing didactics. I have learned a lot from you! I recommend your trail of courses to people without fear of being wrong. Thanks for the contribution!

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Overall Score : 94 / 100

Reactive GraphQL Masterclass For Java Spring Boot Developers
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  • Video Duration: icon 12.7h
  • Price: $84.99
  • Provider: icon Udemy
  • Updated: icon September 2026
  • Level: All Levels All Levels
  • Language: icon English
  • Certificate: icon Yes
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