Software Alternatives, Accelerators & Startups

Sequelize VS JSON Server

Compare Sequelize VS JSON Server and see what are their differences

Sequelize logo Sequelize

Provides access to a MySQL database by mapping database entries to objects and vice-versa.

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
  • Sequelize Landing page
    Landing page //
    2022-10-28
  • JSON Server Landing page
    Landing page //
    2023-08-01

Sequelize features and specs

  • ORM Abstraction
    Sequelize provides a robust Object-Relational Mapping (ORM) layer, allowing developers to interact with the database using JavaScript objects instead of raw SQL queries. This abstraction simplifies database operations and improves code readability.
  • Cross-database compatibility
    Sequelize supports multiple SQL dialects including PostgreSQL, MySQL, MariaDB, SQLite, and Microsoft SQL Server. This flexibility makes it easier to switch between different database systems without major changes to the application code.
  • Query Builder
    Sequelize offers a powerful query builder that allows complex queries to be written in a more intuitive and maintainable way compared to raw SQL. This includes support for nested queries, eager loading, and more.
  • Active Community and Ecosystem
    Sequelize has a large and active community, providing a wealth of tutorials, plugins, and ongoing support. This makes it easier to find solutions to common problems and to extend the functionality of Sequelize.
  • Migrations and Seeder Support
    Sequelize provides built-in tools for creating database migrations and seeders, making it easier to manage and version the database schema over time.
  • Validation and Constraints
    Sequelize offers built-in validation and constraint features that allow developers to define rules and conditions that data must meet before being inserted or updated in the database. This helps maintain data integrity and consistency.

Possible disadvantages of Sequelize

  • Learning Curve
    While Sequelize simplifies many database operations, it has a steep learning curve for beginners. Understanding all the features and properly implementing them can take time and effort.
  • Performance Overhead
    The abstraction layer that Sequelize provides can sometimes introduce performance overhead compared to raw SQL queries. For highly performance-sensitive applications, this might be a concern.
  • Complexity in Complex Queries
    Although Sequelize's query builder is powerful, creating very complex queries can become cumbersome and may require significant effort to optimize. Sometimes raw SQL might be more straightforward for these cases.
  • Limited NoSQL Support
    Sequelize is designed primarily for SQL databases, and its support for NoSQL databases is limited. If your application requires interaction with NoSQL databases, you may need to look for other ORM solutions.
  • Documentation Gaps
    While the official documentation is comprehensive, there can be gaps or lack of clarity in some areas, especially for advanced features. Users may need to rely on community support and external tutorials to fill in these gaps.
  • Handling Large Data Models
    For applications with very large and complex data models, maintaining Sequelize models and associations can become challenging and error-prone. This might necessitate additional tooling or practices to manage effectively.

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.

Sequelize videos

Sequelize Review

More videos:

  • Review - sequelize review
  • Review - Should you use Sequelize, TypeORM, or Prisma?

JSON Server videos

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

Category Popularity

0-100% (relative to Sequelize and JSON Server)
Development
58 58%
42% 42
Web Frameworks
100 100%
0% 0
API Tools
0 0%
100% 100
Developer Tools
100 100%
0% 0

User comments

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Social recommendations and mentions

Sequelize might be a bit more popular than JSON Server. We know about 49 links to it since March 2021 and only 45 links to JSON Server. 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.

Sequelize mentions (49)

  • How To Secure APIs from SQL Injection Vulnerabilities
    Object-Relational Mapping frameworks like Hibernate (Java), SQLAlchemy (Python), and Sequelize (Node.js) typically use parameterized queries by default and abstract direct SQL interaction. These frameworks help eliminate common developer errors that might otherwise introduce vulnerabilities. - Source: dev.to / about 2 months ago
  • Generate an OpenAPI From Your Database
    I was surprised to find that there was no standalone tool that generated an OpenAPI spec directly from a database schema - so I decided to create one. DB2OpenAPI is an Open Source CLI that converts your SQL database into an OpenAPI document, with CRUD routes, descriptions, and JSON schema responses that match your tables' columns. It's built using the Sequelize ORM, which supports:. - Source: dev.to / 4 months ago
  • Secure Coding - Prevention Over Correction.
    For example, in 2019, it was found that the popular Javascript ORM Sequelize was vulnerable to SQL injection attacks. - Source: dev.to / 9 months ago
  • Good Practices Using Node.js + Sequelize with TypeScript
    Integrating Node.js, Sequelize, and TypeScript allows you to build scalable and maintainable backend applications. By following these best practices, such as setting up your project correctly, defining models with type safety, creating typed Express routes, and implementing proper error handling, you can enhance your development workflow and produce higher-quality code. Remember to keep your dependencies... - Source: dev.to / 10 months ago
  • Security Best Practices for Your Node.js Application
    If your application doesn't necessitate raw SQL/NoSQL, opt for Object-Relational Mappers (ORMs) like Sequelize or Object-Document Mappers (ODMs) like Mongoose for database queries. They feature built-in protection against injection attacks, such as parameterized queries, automatic escaping, and schema validation, and adhere to some security best practices. - Source: dev.to / 10 months ago
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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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What are some alternatives?

When comparing Sequelize and JSON Server, you can also consider the following products

Hibernate - Hibernate an open source Java persistence framework project.

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.

Entity Framework - See Comparison of Entity Framework vs NHibernate.

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

SQLAlchemy - SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.

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