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Scalable Application Development with NestJS

You're reading from   Scalable Application Development with NestJS Leverage REST, GraphQL, microservices, testing, and deployment for seamless growth

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Product type Paperback
Published in Jan 2025
Publisher Packt
ISBN-13 9781835468609
Length 612 pages
Edition 1st Edition
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Author (1):
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Pacifique Linjanja Pacifique Linjanja
Author Profile Icon Pacifique Linjanja
Pacifique Linjanja
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Table of Contents (28) Chapters Close

Preface 1. Part 1: Introduction to NestJS and Scalable Application Architecture FREE CHAPTER
2. Chapter 1: Overview of NestJS 3. Chapter 2: Understanding Scalable Application Architecture Principles and Design Patterns 4. Chapter 3: Setting Up Your NestJS Environment and Exploring NestJS – Building a Robust App 5. Chapter 4: Advanced Concepts – Modules, Controllers, Providers, Exception Filters, Pipes, Guards, and Decorators 6. Part 2: REST APIs and GraphQL in NestJS
7. Chapter 5: Building and Optimizing REST APIs with NestJS 8. Chapter 6: Unleashing the Power of GraphQL and the Apollo Federation Architecture in NestJS 9. Part 3: Testing and Debugging APIs in NestJS
10. Chapter 7: Testing and Debugging REST APIs in NestJS 11. Chapter 8: Testing and Debugging GraphQL APIs in NestJS 12. Part 4: Scaling with Microservices and NestJS
13. Chapter 9: Deep Dive into Microservices: Concepts and Architectural Styles 14. Chapter 10: Building Scalable Microservices with NestJS 15. Chapter 11: Testing and Debugging Microservices in NestJS 16. Part 5: Real-World Application Examples and Case Studies
17. Chapter 12: Case Study 1 - E-commerce Application 18. Chapter 13: Case Study 2 – Social Networking Platform 19. Chapter 14: Case Study 3 – Enterprise Resource Planning System 20. Part 6: Deployment, DevOps, and Beyond
21. Chapter 15: Deploying NestJS Applications 22. Chapter 16: Embracing DevOps: Continuous Integration and Continuous Deployment for NestJS 23. Chapter 17: NestJS Performance Optimization 24. Chapter 18: NestJS Security Best Practices 25. Index 26. Other Books You May Enjoy Appendix: Concluding Remarks and Next Steps

Debugging GraphQL APIs

Debugging GraphQL APIs can be challenging due to the complexity involved in query execution, schema definitions, and resolver logic. The challenge becomes even more pronounced in a project such as ours, which uses the code-first approach to generate the schema. With a schema automatically generated from the code, issues can arise from mismatched types, invalid queries, or resolver misconfigurations. Unlike REST APIs, which rely on distinct endpoints, GraphQL’s single endpoint structure adds another layer of complexity, making it harder to identify the root cause of an issue.

In this section, we’ll explore how to debug GraphQL APIs efficiently within the context of our project. We’ll cover tools and practices tailored to the code-first approach, ensuring that schema, queries, and mutations work as expected.

Understanding debugging challenges for GraphQL APIs

Debugging GraphQL APIs presents distinct challenges compared to traditional...

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