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Request Lifecycle and Execution Context in NestJS

Kumar Prafull -
In NestJS, understanding the request lifecycle and the execution context is essential for developing robust and efficient applications. The request lifecycle is the series...

Guards: Implementing Role-Based Access Control in NestJS

Kumar Prafull -
In NestJS, guards are used to protect routes by determining whether the request should be allowed to proceed. Guards can be used for a...

Interceptors: Transforming and Logging Responses in NestJS

Kumar Prafull -
In NestJS, interceptors are used to modify the response returned by a route handler. They allow you to execute additional logic before the final...

Middleware: Preprocessing Requests in NestJS

Kumar Prafull -
Middleware in NestJS is a powerful concept that allows you to execute logic before or after handling incoming HTTP requests. Middleware can be used...

Exception Filters: Centralized Error Handling in NestJS

Kumar Prafull -
In any application, error handling is critical for ensuring that users receive meaningful feedback when things go wrong. In NestJS, exception filters are a...

Using Pipes for Transformation and Validation in NestJS

Kumar Prafull -
In NestJS, pipes are a powerful and flexible mechanism for handling data transformations and validation. They allow you to manipulate data, validate inputs, and...

DTOs and Validation with class-validator in NestJS

Kumar Prafull -
In modern web development, validating incoming data is crucial for ensuring that your application behaves as expected and maintains data integrity. DTOs (Data Transfer...

Working with Environment Variables and Validation

Kumar Prafull -
Table of Contents Introduction Overview of environment variables and their importance in modern applications Why validation is crucial for ensuring the integrity of input data Working with Environment...

Configuration Management with @nestjs/config

Kumar Prafull -
Table of Contents Introduction to Configuration in NestJS Why Use @nestjs/config? Installing and Setting Up @nestjs/config Using .env Files for Environment Variables Accessing Config Values in Services Configuration Namespaces and...

Services and Dependency Injection in NestJS

Kumar Prafull -
Table of Contents Introduction to Services Why Use Services? Creating Your First Service Understanding Dependency Injection in NestJS Service Scope: Default, Transient, and Request-Scoped Injecting Services into Controllers Using Interfaces for...

Controllers and Routes – Building the API Layer in NestJS

Kumar Prafull -
Table of Contents Introduction to Controllers Role of Controllers in the Request-Response Cycle Creating a Controller with @Controller() HTTP Methods: @Get(), @Post(), @Put(), @Delete(), etc. Route Parameters and Dynamic...

Understanding Modules – NestJS Architecture Basics

Kumar Prafull -
Table of Contents What Are Modules in NestJS? Why Modules Matter: Core to Nest’s Architecture Exploring the @Module() Decorator Imports, Exports, Providers, and Controllers Shared Modules and Feature Modules Best...
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