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Understanding the NestJS Architecture: A Deep Dive The Technology Sage TechSage

When it comes to distributed microservices/cloud architectures, the lightweight factor is essential — from both the engineer and customer perspective. Built on top of Express.JS, Nest.JS offers multiple functionalities and out-of-the-box APIs. Developers can leverage the features of Nest.JS to build applications with less code.

In addition, with APIs, our team liked exposing a new entity than they have in their model, and NestJS was good for class layers. The reason our engineering team chose NestJS is because the NestJS framework checked their three key boxes, is highly customizable, has extensive documentation, and has a broad community of followers. Providers are fundamental to Nest — a provider can be injected as a dependency to create relationships between various objects.

The first day of my solo project

We can do this by creating a directory named “DTO” inside our todo folder, and then creating the file. Next, the command will prompt you to choose your preferred package manager. You can also choose other JavaScript and TypeScript package managers like yarn.

Who developed NestJS

Typescript allows Javascript users to write cleaner and safer code, making them simple and easy to learn. Moreover, NestJS provides a great typing experience in the non-typed Javascript ecosystem. Throughout the development process, the Argus team had the REST API written in the Scala/Play framework. The Play framework is a functional and asynchronous framework that is adopted by a relatively big community. Nest.js is a popular and in-demand backend framework in the Node.js ecosystem.

What are some of the core concepts of Nest.JS?

If you have an application that requires you to use Hapi, go for it. NestJS uses strong HTTP server frameworks like Express and Fastify that provide a degree of abstraction over major Node.js frameworks. But, they also expose their APIs to the developer directly, allowing developers to use the plethora of third-party modules available for the underlying platform. All you need to start the development is to set up a new app and you are ready to go.

If something doesn’t come from within one specific module, it can’t really be accessed in other parts of the application. Single responsibility is enforced, making it easier for project growth across a team. As a development platform for multiple devs in various teams, NestJS provides standard guidelines for each member to prevent chaos and ensure high code quality. This defined, standardised architecture results in an easily maintainable codebase.

Hello, nest!

NestJS and Express.js are both used for building web applications and APIs. Both are built on top of the Node.js runtime, which allows you to run JavaScript on the server side. Using comprehensive knowledge of JavaScript, you use Nest to build secure, scalable, and responsive web applications. Nest.js provides a layer of abstraction on top of Node.js, which means that it can leverage the features of Node.js as well as expose supercharged APIs for better performance and efficiency. The Nest framework allows access to tons of third-party modules to speed up the development process and an added layer of robustness to the code.

  • It adds optional types to JavaScript that support tools for large-scale JavaScript applications for the first time.
  • This method sends a message to the microservice, and the send method will wait until the microservice successfully completes the operation and sends back a response before returning.
  • In this article, we’ll explore Nest.js and what you can build with it.
  • Here, we’ll list different reasons to select Nest.js as your Node.js framework for upgrading or building your next project.
  • Despite its capabilities, devs realised that NodeJS itself required a framework because it was too plain and simple.
  • You can create countless types of applications with Node.js; you’re only limited by your applications’ features.

I get that sails is closest to rails, but that’s not particularly a priority. NestJS is an exciting server-side framework that supports many components such as pipes, interceptors, middleware, exception filters, etc. However, being relatively new to the web development world, Nest has its fair share of drawbacks and areas for improvement.

Defining NestJS and How to Get Started

A few other things we like about Nest applications is that the framework is more opinionated than Express, another Node.js framework, or TSOA, which is good for a growing team. Nest offers a lot of flexibility with its Guards and custom Decorators, plus they have more context than basic middleware. Finally, with Nest decorators, our engineers can define our MongoDB schema alongside our types which preserves compatibility.

Who developed NestJS

It is recommended to use available learning tools such as official documentation, tutorials, videos, and community support to overcome the learning curve. The Nest.js community is active and offers useful support via forums and online communities. Nest.js has a moderate learning curve that depends on several factors. Nest.js may be easier to grasp if you are already familiar with JavaScript or TypeScript and have familiarity with backend development topics such as establishing APIs and handling data. We need to start the development server to ensure everything is working properly before deploying to a live production server.

Application architecture

Takes advantage of latest JavaScript features, bringing design patterns and mature solutions to Node.js world. Learn about its features, costs, and real-world examples to choose the best one. Middlewares are functions that are executed by NestJS before a request reaches the final handler. Middlewares can be used for a variety of purposes, such as logging, authentication, and authorization. NestJS is language agnostic, meaning that it can work with any language that can compile to JavaScript.

Who developed NestJS

NestJS has its own rules and is not only for backend development. The framework is DDD-friendly, Event sourced, and offers microservice architecture. It provides the engineering team with standard development architecture and industry best practices. With it, developers can abstract away repeated engineering processes to focus solely on developing the business logic.