Software Alternatives, Accelerators & Startups

ExpressJS VS Jsonnet

Compare ExpressJS VS Jsonnet and see what are their differences

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ExpressJS logo ExpressJS

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

Jsonnet logo Jsonnet

A powerful DSL for elegant description of JSON data.
  • ExpressJS Landing page
    Landing page //
    2021-10-14
  • Jsonnet Landing page
    Landing page //
    2023-05-26

ExpressJS features and specs

  • Fast Setup
    ExpressJS provides a minimal and flexible framework that allows rapid setup and development of web and mobile applications.
  • Middleware Support
    ExpressJS has a robust middleware system, allowing developers to add reusable functions to the request-handling pipeline.
  • Extensibility
    ExpressJS is highly extensible through third-party libraries and built-in functionality, catering to the needs of various applications.
  • Performance
    Due to its minimalist core, ExpressJS provides efficient performance and is capable of handling a high number of requests per second.
  • Community and Ecosystem
    A large and active community provides extensive documentation, support, and a wide array of open-source packages to extend functionality.
  • Flexibility
    Compared to full-stack frameworks, ExpressJS gives developers the freedom to structure their applications as they see fit.
  • Compatibility
    ExpressJS works seamlessly with various template engines, databases, and other frameworks, making it versatile for different project requirements.

Possible disadvantages of ExpressJS

  • Minimalist Core
    The minimalist nature of ExpressJS may require additional time and effort to integrate required plugins and libraries for specific features.
  • Learning Curve
    While ExpressJS is straightforward, mastering the middleware pattern and effective usage can have a learning curve for new developers.
  • Callback Hell
    Developers can encounter 'callback hell' due to nested callback functions, though this can be mitigated using Promises and async/await in modern JavaScript.
  • Lack of Convention
    Unlike opinionated frameworks, ExpressJS lacks conventions, which can lead to inconsistent code structure and maintenance challenges across different projects.
  • Security
    ExpressJS does not have built-in security features and relies on third-party solutions, requiring developers to be vigilant about applying best security practices.
  • Scalability
    While ExpressJS can handle high traffic, building and maintaining a highly scalable application might require significant additional effort, particularly in terms of codebase organization and resource management.

Jsonnet features and specs

  • Configurability
    Jsonnet allows you to write configurations as code, enabling dynamic configuration generation and making it easier to manage complex configurations.
  • Extensibility
    Jsonnet supports functions and imports, enabling code reuse and modular configuration design across different files and projects.
  • JSON Compatibility
    Since Jsonnet is a JSON extension, it is fully compatible with JSON, meaning any valid JSON file is also valid in Jsonnet.
  • Reduce Repetition
    Jsonnet reduces redundancy through capabilities like variables and functions, helping to avoid repetitive configurations and boilerplate.
  • Final Manifest
    Jsonnet outputs a final manifest in JSON, providing a clean and widely-accepted data format that can be used directly by applications.

Possible disadvantages of Jsonnet

  • Learning Curve
    Jsonnet introduces new syntax and concepts (such as mixins and imports) that may require time to learn and adapt to, especially for developers familiar with plain JSON.
  • Tooling Support
    While gaining traction, Jsonnet still has limited tooling and IDE support compared to more established configuration languages or file formats.
  • Complexity in Parsing
    As a more expressive configuration language, Jsonnet may introduce complexity in parsing and understanding configuration files compared to using straightforward JSON.
  • Overhead
    The additional features and functionalities of Jsonnet can introduce computational overhead, potentially making it slower than using simple JSON for very massive configurations.

ExpressJS videos

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Jsonnet videos

Jsonnet

More videos:

  • Review - Using Jsonnet to Package Together Dashboards, Alerts and Exporters - Tom Wilkie
  • Review - Webinar: Writing Less YAML – Using jsonnet and kubecfg to Manage Kubernetes Resources

Category Popularity

0-100% (relative to ExpressJS and Jsonnet)
JavaScript Framework
100 100%
0% 0
Configuration Management
0 0%
100% 100
Developer Tools
95 95%
5% 5
Software Development
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ExpressJS and Jsonnet

ExpressJS Reviews

Top JavaScript Frameworks in 2025
Express.JS is used to create Restful APIs, which is useful for accepting requests from the front end and sending the appropriate response. Express.JS supports Node.js, which is one of the best reasons developers choose to use it. Moreover, debugging becomes faster and helps in finding errors in less time.
Source: solguruz.com
The 20 Best Laravel Alternatives for Web Development
Express.js — or Express for the cool cats — is Node.js’s minimalist wingman. It’s the train tracks for your web app, setting the path, defining the stops, but letting you drive the engine.
Top 9 best Frameworks for web development
The best frameworks for web development include React, Angular, Vue.js, Django, Spring, Laravel, Ruby on Rails, Flask and Express.js. Each of these frameworks has its own advantages and distinctive features, so it is important to choose the framework that best suits the needs of your project.
Source: www.kiwop.com
9 Best JavaScript Frameworks to Use in 2023
Additionally, Express.js v4 now comes with built-in middleware for handling AJAX requests from the client side, making it even easier to get started without having to worry about 3rd party libraries. Express.js is a great tool for quickly building out web applications and APIs in Node.js.
Source: ninetailed.io
JavaScript: What Are The Most Used Frameworks For This Language?
Express.JS is a popular open-source web application framework for Node.JS, which is a server-side JavaScript runtime environment. Express.JS provides a simple, flexible and scalable way to build web applications and APIs using Node.JS. It is known for its minimalist and unimposing approach, which means it provides a basic set of features and tools but allows developers to...
Source: www.bocasay.com

Jsonnet Reviews

We have no reviews of Jsonnet yet.
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Social recommendations and mentions

Based on our record, ExpressJS seems to be a lot more popular than Jsonnet. While we know about 469 links to ExpressJS, we've tracked only 37 mentions of Jsonnet. 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.

ExpressJS mentions (469)

  • Not a Middy Fan
    Express.js was created around the time callbacks were _the_ architecture in Node.js. The world, including UI, quickly found callbacks do not compose well, and void return values are hard to test because of side-effects. Promises were created so you could compose functions, but still have control where your side-effects go. This negates the need for middlewares / callbacks. - Source: dev.to / 5 days ago
  • Experimental Devvit Web Views
    The Devvit team just announced a new experimental way to build WebView based apps for Reddit. Previously only static HTML/JS/CSS could be used. With this new version, it is possible to run server-side code through Node including spinning up an Express server. - Source: dev.to / 8 days ago
  • How to Handle File Uploads with Node.js and Express - Multer Edition
    Basic knowledge of JavaScript and Express. - Source: dev.to / 11 days ago
  • Reusable API proxy in just a few lines of JavaScript
    The basis of my small API proxy is the NPM package http-proxy-middleware from Steven Chim, which I utilized to build a system that can be used via configuration for various endpoints and that runs on a server under the Node.js framework Express. - Source: dev.to / 26 days ago
  • How To Fetch Image From Database and Display In React JS
    Express Documentation This site has comprehensive guides on setting up routes, handling requests, and working with middleware in Express. - Source: dev.to / about 2 months ago
View more

Jsonnet mentions (37)

  • Levels of Configuration Languages
    Https://jsonnet.org/ I never heard of this before. This seems like the JSON I wish I really had. Of course at some point you could just use JavaScript. - Source: Hacker News / about 1 month ago
  • Standard ML idiosyncrasies
    I've been reading the book Modern Compiler Implementation in ML lately. It's been helpful to brush up on some concepts while developing Tsonnet (my typed-aspiring Jsonnet flavor) and I hope to learn a ton more. However, I'm growing dissatisfied with some details -- not specifically the book, but the choice of the development environment. - Source: dev.to / 2 months ago
  • Tsonnet, a humble beginning
    For the past 2 years, I've been working extensively with Jsonnet, a configuration language that augments JSON and helps eliminate repetition in our config files. It has its limits (many by design), which keeps the language simple to use. But there's one thing that keeps nagging at me when I'm deep in the code: what's the shape of the input or output of this function? And wouldn't it be great if we could type... - Source: dev.to / 4 months ago
  • Refactor Terraform Resource Names By One Command
    Jsonnet: Use --jsonnet (-j) for advanced, programmatically controlled renaming logic. - Source: dev.to / 5 months ago
  • Kubernetes 101: Introduction
    Kubernetes does not provide or require a configuration language like Jsonnet, as it provides a declarative API that can be used with different types of declarative specifications. - Source: dev.to / 10 months ago
View more

What are some alternatives?

When comparing ExpressJS and Jsonnet, you can also consider the following products

Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications

Dhall Configuration Language - A non-repetitive alternative to YAML

Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...

Protobuf - Protocol buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data.

Django - The Web framework for perfectionists with deadlines

YAML - YAML 1.2 --- YAML: YAML Ain't Markup Language