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Contributors
Preface
Who this book is for
Part 1 Introduction to NestJS and Scalable Application Architecture
1 Overview of NestJS
Technical requirements
Introduction to NestJS
The power of TypeScript
Key features of NestJS
The ecosystem of NestJS
Why choose NestJS?
Summary
2 Understanding Scalable Application Architecture Principles and Design Patterns
Technical requirements
Principles of Scalable Application Architecture
Caching strategies for performance optimization
Design patterns for building scalable NestJS applications
Understanding asynchronous programming for scalability
Best practices for building scalable applications
Summary
3 Setting Up Your NestJS Environment and Exploring NestJS – Building a Robust App
Technical requirements
Installing Node.js and NestJS
Scaffolding a new NestJS project
Understanding the NestJS project structure
Creating and managing modules
Building controllers for handling requests
Implementing providers for business logic
Dependency injection – the magic behind providers
Handling exceptions with exception filters
Validating data with pipes and guards
Summary
4 Advanced Concepts – Modules, Controllers, Providers, Exception Filters, Pipes, Guards, and Decorators
Technical requirements
Diving deeper into modules
NestJS controller essentials and advanced practices
Understanding providers in depth
Understanding request lifecycle
Summary
Part 2 REST APIs and GraphQL in NestJS
5 Building and Optimizing REST APIs with NestJS
Technical requirements
Introduction to REST APIs in NestJS
Building a basic REST API
Reflecting on REST API best practices
Versioning your API
Robust error handling in REST APIs
Documenting your API
Summary
6 Unleashing the Power of GraphQL and the Apollo Federation Architecture in NestJS
Technical requirements
Understanding GraphQL fundamentals in NestJS
Building and optimizing a GraphQL API with NestJS
Learning about GraphQL subscriptions
Securing GraphQL – authentication and authorization
Introduction to Apollo Federation
Summary
Part 3 Testing and Debugging APIs in NestJS
7 Testing and Debugging REST APIs in NestJS
Technical requirements
Understanding the importance of testing
Unit testing in NestJS
Integration testing in NestJS
Testing guards, interceptors, and middleware
Debugging REST APIs
Summary
8 Testing and Debugging GraphQL APIs in NestJS
Technical requirements
Unit testing for GraphQL resolvers
E2E testing in GraphQL
Debugging GraphQL APIs
Summary
Part 4 Scaling with Microservices and NestJS
9 Deep Dive into Microservices:Concepts and Architectural Styles
Technical requirements
Understanding microservices
Benefits of microservices architecture
Microservices architectural styles
Summary
10 Building Scalable Microservices with NestJS
Technical requirements
Defining and implementing microservices in NestJS
Overview of the microservices package in NestJS
Inter-service communication and data integrity in NestJS
Best practices for building microservices with NestJS
Troubleshooting and debugging microservices
Summary
11 Testing and Debugging Microservices in NestJS
Technical requirements
Unit testing for microservices
Integration testing for microservices
Debugging common issues and solutions in microservices testing
Best practices for testing and debugging microservices
Summary
Part 5 Real-World Application Examples and Case Studies
12 Case Study 1 - E-commerce Application
Technical requirements
Understanding the requirements of an e-commerce application
Designing the application architecture and data modeling
Implementing REST APIs for products and orders
User authentication and authorization in an e-commerce context
Summary
13 Case Study 2 – Social Networking Platform
Technical requirements
Understanding the requirements of a social networking platform
Designing the application structure for social networking
Implementing GraphQL APIs for users, posts, and interactions
User relationships and social features
Posting real-time updates and notifications in a social networking context
Summary
14 Case Study 3 – Enterprise Resource Planning System
Technical requirements
Understanding the requirements of an ERP system
Designing the system architecture for an ERP system
Implementing microservices for scalability and modularity
Data synchronization and consistency in an ERP context
Handling complex business processes and workflows
Summary
Part 6 Deployment, DevOps, and Beyond
15 Deploying NestJS Applications
Technical requirements
Configuring a local server for production-like testing
Deployment using Docker
Deployment on Cloud platforms
Post-deployment best practices
Summary
Further reading
16 Embracing DevOps: Continuous Integration and Continuous Deployment for NestJS
Understanding continuous integration and continuous deployment
Choosing your CI/CD tools
Setting up a CI/CD pipeline for NestJS
CI/CD best practices
Summary
17 NestJS Per formance Optimization
Technical requirements
Understanding performance optimization
Code optimization techniques
Database optimization techniques
Caching strategies for NestJS
Profiling and load testing
Best practices for performance optimization
Summary
18 NestJS Security Best Practices
Technical requirements
Understanding application security
Data security in NestJS
Authentication and authorization in NestJS
Preventing common security threats
Security best practices in NestJS
Summary
Appendix Concluding Remarks and Next Steps
Key takeaways from the book
Exploring the NestJS ecosystem further
Keeping up with NestJS updates and best practices
Other useful resources
Avoiding common pitfalls
Final words
Unlock Your Exclusive Benefits
Index
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Scalable Application Development with NestJS