Because Node.js itself wasn’t intended to build websites, the Express framework is able to layer in built-in structure and functions needed to actually build a site. It’s a pretty lightweight framework that’s great for giving developers extra, built-in web application features and the Express API without overriding the already robust, feature-packed Node.js platform. In short, Express and Node are changing the way developers build websites.
EXPRESS.JS FRAMEWORK BASICS :
- Server-side web and mobile application framework
- Express builds:
- Single-page, multi-page, and hybrid mobile and web apps
- Common back-end functions for web applications
- APIs (application programming interfaces)
- Templating engines: Express comes with two templating engines, Jade and EJS, which facilitate the flow of data into a website structure.
- MVC pattern: Express supports the Model-View-Controller architecture, a really helpful way to build websites in a model-driven format.
- Platform: Node.js
- Operating system: It’s cross-platform, so it’s not limited to one OS.
- The Express Generator lets you create complex applications quickly.
Express.js and the MEAN Stack
Express.js is the “E” in the MEAN software stack, where it runs alongside the MongoDB database, the Node.js environment, and the AngularJS front-end framework.
Every software stack includes an operating system, database, server, and development platform—everything you need to build and run the back end of a website or web applications.
1. Easy Scalability
One of the key advantages of Node.js is that developers find it easy to scale the applications in horizontal as well as the vertical directions. The applications can be scaled in horizontal manner by the addition of additional nodes to the existing system.
2. Easy to Learn
3. Node.js is used as a Single Programming Language
4. The Benefit of Fullstack JS
5. Known for Offering High Performance
The speed of the code execution also enhanced by runtime environment as it supports the non-blocking I/O operations.
6. The Support of Large and Active Community
Node.js is blessed to have a large and active community of developers who keep on continuously contributing towards its further development and improvement.
7. The Advantage of Caching
The open-source runtime environment of the Node.js also provides the facility of caching single modules. Whenever there is any request for the first module, it gets cached in the application memory.
The developers don’t have to re-execute the codes as caching allows applications to load the web pages faster and responds more swiftly to the user.
8. Offers the Freedom to Develop Apps
Another advantage that Node.js offers to the developers is the freedom to develop the apps and software. This is one essential feature, which remains absent in Ruby on Rails imposing certain guidelines. You can begin everything from the scratch while developing applications.
9. Getting Support for Commonly Used Tools
With Node.js the developers can get an extended support for the various commonly used tools. Let’s take an example. Suppose, you want to test the source code of Node.js application; you can do so by using the Jasmin and other such unit-testing tools.
Similarly, if you want to identify and install the project dependencies, you can make use of npm, a powerful package manager. You can use grunt for task running of the project.
10. Handles the Requests Simultaneously
Since the Node.js is providing the option of non-blocking I/O systems, it relatively helps you to process several requests concurrently.
The system can handle the concurrent request handling efficiently better than others including Ruby or Python. The incoming requests get lined up and are executed quickly and systematically.
11. Node.js is Highly Extensible
The Node.js is known to be highly extensible, which means that you can customize and further extend Node.js as per their requirements. You can also make use of JSON to provide the scope for exchange of data between the web server and the client. It also is facilitated with built-in APIs for developing HTTP, TCP, and DNS etc. servers.
1. Application Programming Interface (API) is Not Stable
One of the key problems that most of the developers encounter is the Application Programming Interface (API) keeps on changing at frequent intervals and does not remain stable.
At times, a new API appears having a number of backwards-incompatible changes. As a result the developers are forced to make changes in the accessible code bases to match the compatibility with the latest version of the Node.js API.
2. Does not have a Strong Library Support System
This makes it difficult for the developers to even implement the common programming tasks using Node.js.
3. Asynchronous Programming Model
If you want to make the applications more scalable, the necessary requisite is adoption of the asynchronous programming model. However, many developers may find this programming model to be more difficult in comparison to the linear blocking I/O programming.