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JSON Server VS Nest.js

Compare JSON Server VS Nest.js and see what are their differences

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JSON Server logo JSON Server

Get a full fake REST API with zero coding in less than 30 seconds. For front-end developers who need a quick back-end for prototyping and mocking

Nest.js logo Nest.js

A progressive Node.js framework for building efficient, reliable and scalable server-side applications.
  • JSON Server Landing page
    Landing page //
    2023-08-01
  • Nest.js Landing page
    Landing page //
    2023-03-26

JSON Server features and specs

  • Ease of Setup
    JSON Server can be set up quickly with minimal configuration, making it ideal for prototyping and rapid development. It allows developers to have a fully functioning REST API within minutes.
  • RESTful API
    It provides a standard RESTful API out of the box, allowing developers to perform all CRUD operations. This is helpful for simulating a real-world server while testing client-side applications.
  • Customization
    JSON Server supports middlewares, routes, and custom rules, allowing developers to customize the behavior and structure of the API to better suit their needs.
  • Fakes Backend Data
    It's great for simulating backend responses without needing a real backend setup, useful in front-end development to test components and interactions.
  • Lightweight
    As a lightweight server, it requires fewer resources and is quite simple compared to setting up a full-fledged backend server.

Possible disadvantages of JSON Server

  • Not for Production
    JSON Server is designed for development and testing. It is not suitable for production use due to performance limits and lack of robust security features.
  • Limited Functionality
    While JSON Server is great for basic CRUD operations, it lacks advanced features like authentication, authorization, and complex querying.
  • Data Persistence
    Data is stored in a JSON file, and while this is convenient for testing, it is not suitable for applications that require persistent and scalable data storage.
  • In-memory Limitations
    Being an in-memory server, it may have issues with handling large datasets or complex data structures efficiently.
  • Manual Data Reset
    Any changes made to the JSON file while the server is running require manual resets or reloads to reflect in the API, which can be cumbersome during continuous development cycles.

Nest.js features and specs

  • Modular Architecture
    Nest.js uses a modular architecture which is highly organized and maintainable. This allows for better separation of concerns and makes it easier to manage large-scale applications by dividing them into smaller, reusable modules.
  • TypeScript Support
    Nest.js is built with TypeScript, providing strong typing and compile-time checks. This leads to fewer runtime errors and improved code readability and maintainability.
  • Dependency Injection
    The framework includes a powerful dependency injection system, which enables better testability and easier management of application components.
  • Built-in Middleware
    Nest.js supports middleware out of the box, allowing developers to easily add additional request-processing logic at different points in the request lifecycle.
  • Extensive Documentation
    Nest.js offers comprehensive and detailed documentation, which helps developers quickly get up to speed and resolve issues more efficiently.
  • Scalability
    The framework is designed to be scalable, making it suitable for projects of varying sizes—from small applications to large enterprise-level systems.
  • Integration with Modern Libraries
    Nest.js seamlessly integrates with modern libraries and frameworks such as GraphQL, WebSockets, and TypeORM, extending its capabilities and allowing for versatile development options.
  • Active Community
    An active and growing community around Nest.js means there are plenty of resources, tutorials, and third-party tools available to assist with development.

Possible disadvantages of Nest.js

  • Learning Curve
    Due to its rich feature set and use of TypeScript, Nest.js can have a steep learning curve for developers who are not familiar with these technologies.
  • Overhead
    The reliance on the decorators and classes can introduce additional overhead, potentially making simple projects more complex than necessary.
  • Limited Flexibility
    Nest.js follows an opinionated architecture pattern, which can be restrictive for developers who prefer a more flexible or unstructured approach.
  • Performance
    While Nest.js is generally performant, the abstraction layers and TypeScript compile steps can introduce slight performance overhead compared to more lightweight alternatives.
  • Dependency on TypeScript
    The heavy reliance on TypeScript can be a drawback for developers who prefer to use plain JavaScript, or who are not familiar with TypeScript.
  • Community Compared to Mainstream Frameworks
    Although the Nest.js community is active and growing, it is still smaller compared to more established frameworks like Express.js or Koa, potentially limiting the amount of shared knowledge and third-party packages available.

JSON Server videos

Angular CRUD with Web API Tutorial Part #3 - Setup Local JSON Server and Mock API Endpoints

Nest.js videos

Why I chose Nest.js over Express.js in 2020

Category Popularity

0-100% (relative to JSON Server and Nest.js)
Development
63 63%
37% 37
Web Frameworks
0 0%
100% 100
API Tools
100 100%
0% 0
JavaScript Framework
0 0%
100% 100

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Reviews

These are some of the external sources and on-site user reviews we've used to compare JSON Server and Nest.js

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Nest.js Reviews

Top JavaScript Frameworks in 2025
Nest (NestJS) is a framework for building efficient and scalable server-side backend applications using Node.Js. Internally, it actually makes use of JavaScript Back-end frameworks like Express (which is the default, and optionally Fastify can be configured to use as well!
Source: solguruz.com
10 Best Next.js Alternatives to Consider Today
For TypeScript aficionados seeking a framework with a modular, scalable architecture, NestJS stands out. Built on top of Node.js, NestJS offers a powerful set of abstractions for building server-side applications. Its modular structure facilitates the creation of scalable and maintainable codebases, making it a preferred choice for enterprise-level applications where a...
The 20 Best Laravel Alternatives for Web Development
NestJS is a Node.js framework that’s inspired by Angular, and guess what? It’s written in TypeScript. Building with Typescript is like you’re navigating with the stars. It’s all about sturdy architecture, a server-side framework that enjoys the scripting superness while piling on extra sturdiness.
Top 10 Best Node. Js Frameworks to Improve Web Development
It is a structure, which is used for making expert, versatile Node.js applications on the server-side. It employs powerful JavaScript plus designed with TypeScript. Working with TypeScript indicates Nest brings uninterrupted writing and incorporates elements like the following
Top 14 Node.JS Frameworks: Which Will Rule in 2020?
Nest utilizes Express.JS and provides an unusual app architecture that allows for the easy development of easily maintainable, loosely paired and highly scalable and testable apps. Developers can use Nest CLI for developing NestJS apps with different features.

Social recommendations and mentions

Based on our record, Nest.js should be more popular than JSON Server. It has been mentiond 217 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

JSON Server mentions (45)

  • Building a CRUD app with React Query, TypeScript, and Axios
    We'll be using json-server to create the REST API that we'll fetch data from. In the root of the project, create a db.json file with the contents. - Source: dev.to / 11 months ago
  • Full Stack To Do list, a step-by-step tutorial
    Our backend will be little more than a two-way translation layer between the database and the user interface (UI). Later in this post we will identify other responsibilities of a backend but our implementation will be kept simple to demonstrate the fundamental machinery and concepts. It is worth noting the backend comes in two parts, web server and application server. Both json-server and Express are able to... - Source: dev.to / almost 2 years ago
  • Improve Frontend-Backend development harmony with JSON-Server
    JSON-Server creates fake REST API with a minimum amount of configuration, it provides a simple way to create mock RESTful APIs and easily define the required endpoints, allows easy definition of the data schema in a JSON file and can serve as a reference for each figure in the project. - Source: dev.to / almost 2 years ago
  • Dictionary app
    I thought about usingJson Server (hosting the repo with the words on Github to begin with), Googlesheets, or maybe Firestore (i would prefer not to use it ,to avoid extra costs just in case it gets a reasonable amount of users). It isnt a big app so I just want a simple solution for storing the words and fetching them. Source: almost 2 years ago
  • Playwright - Not just for Frontend
    First, I didn't create a backend API for this example, but I used a fake API to test. I created it with json-server and json-server-auth. They are two npm packages that use a JSON file as a database and expose the database in an API. You can find more about json-server in its documentation and about json-server-auth here. - Source: dev.to / about 2 years ago
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Nest.js mentions (217)

  • Next.js vs Nest.js: Understanding the Difference
    Read more about Next.js here and Nest.js here. - Source: dev.to / about 1 month ago
  • Secure Your REST API Using Keycloak Role-Based Access Control
    In this article, we will walk through a step-by-step process to secure a Nest.js RESTful API using Keycloak. This includes setting up an application client and configuring authentication and RBAC for your API endpoints. - Source: dev.to / about 2 months ago
  • Next.js vs Nest.js: What to Choose in 2025?
    The rapid evolution of web development in 2025 makes it imperative to choose a framework that truly fits your project. Whether this involves a dynamic web application, scalable API, or high-performance SaaS product, the decision to select Next.js or Nest.js becomes all the more key. While both do their thing really well, in this sense, they don't do the same thing. - Source: dev.to / 3 months ago
  • Why Ruby on Rails still matters
    Ok, you're right. I was referring to the usual ones (Next, Nuxt, SvelteKit, Remix, etc). Joytick looks cool. Besides this there's also NestJS https://nestjs.com/. - Source: Hacker News / 3 months ago
  • Secure Your NestJS App: Implementing Authentication with Auth0
    Basic knowledge of NestJS and Javascript/Typescript. - Source: dev.to / 3 months ago
View more

What are some alternatives?

When comparing JSON Server and Nest.js, you can also consider the following products

JSON Placeholder - JSON Placeholder is a modern platform that provides you online REST API, which you can instantly use whenever you need any fake data.

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

ReqRes - A hosted REST-API ready to respond to your AJAX requests.

Laravel - A PHP Framework For Web Artisans

Mockae - The most flexible way to mock REST APIs with Lua code execution

Adonis JS - AdonisJs is a Node.js web framework with breath of fresh air and drizzle of elegant syntax on top of it