What is Node.js: Strengths and Weaknesses

Airbnb, LinkedIn, Walmart, Uber, and even NASA have used Node.js in their production. Many small companies and beginners follow in their footsteps and utilize technology in building applications. The benefits of Node.js are countless, but you also need to be aware of the constraints

What is Node.js?

Node.js is server-side JavaScript. Lately you may have started to hear that word in the programming world. But why do we actually need JavaScript on the server?

To make the Node.js concept clear we can compare it to ordinary server-side languages ​​like PHP. Node.js uses event-based server execution procedures and not multithread execution in PHP.

To explain this further, we will first discuss what Node.JS.

Consider a website where you need to load content dynamically from another slow web server. In PHP you can do it in 2 ways – encode it in a simple file and encode it as another script, then execute it in multithread.

What is Node.js

In the first method even though the code is simple, execution will stop for a moment when the webserver is slow to access. The second method is more optimized when performance occurs but is difficult to encode and has multithread management overhead. This case is similar for most web programming languages ​​besides server-side JavaScript, i.e., Node.js.

What is the difference between Node.js? To understand Node.js, you must remember JavaScript-based programming in the browser. We use the same technology here. Instead of using a separate thread, a function is attached to the final event of “slow web server access” mentioned above, so you get full functionality on the second optimized option mentioned above without multithread overhead.

Difference between Node.js and JavaScript

There is no difference between web JavaScript and Node.js in terms of the language used. JavaScript is used in the browser and in Node.js almost exactly the same. What makes Node.js special is a different set of APIs. In the browser, you have a variety of open DOM / Web APIs that help you interact with the UI and allow you to access hardware to some extent.

To compare, Node.js is equipped with many APIs that are suitable for backend development, e.g. support for file systems, HTTP requests flow, child processes, etc. The browser offers some basic support for file systems or HTTP requests but is usually limited due to security issues.

The Advantages of Node.js

Here are some advantages of node.js

Easy to learn

According to Node.js’s 2016 User Survey Javascript is one of the most popular programming languages ​​for front-end development. Almost every front-end developer is familiar with this universal language. Therefore, it’s easier for them to switch to using Node.js in the back-end. This requires a little effort and a little time to learn and work together, even for junior Javascript programmers.

Freedom in Building Apps

While Ruby on Rails is a framework that applies software development rules and guidelines in certain ways, Node.js gives you more space and freedom to do it your own way. Node.js is completely undivided, meaning you start building everything from scratch. This can do basic tasks, but only gives you a slight delay from new installs, so it’s unlimited.

Fullstack JS

Before Node.js, Javascript was only used for client-side development. It needs to use a different server-side programming language. In practice, you must employ separate devs for the backend and for the frontend. With the growing popularity of Node.js full-stack JavaScript has become a reality. Nowadays it is possible to write both front-end and back-end web applications in Javascript, making application implementation easier and more efficient.

Active Community

The Node.js developer community is a very active and dynamic developer group that contributes to the improvement of Node.js. Thanks to the cooperation of JavaScript programmers and their input to the community, you can get access to a ton of ready-made solutions, code on Github and many other possibilities. Although, it is still at a relatively early stage of development, society dynamically develops and its members go the extra mile to provide the best and reliable solutions to others.

Handling Concurrent Requests

Node.js provides a non-blocking IO system that allows you to process multiple requests simultaneously. This system makes handling requests simultaneously much better than other languages ​​like Ruby or Python. Incoming requests are queued and executed in quick succession. As a result your application will consume far less system RAM, achieve a high level of scalability and the results will be faster.

Shortage of Node.Js

With all its advantages, Node.js still has some shortcomings. Here are some of the shortcomings of Node.js

API is not stable

One of the biggest weaknesses of Node.js is the lack of consistency. The Node.js API changes frequently, and the changes are moved incorrectly. When this happens, the programmer must make changes to the existing code base to be compatible with the latest version of the Node.js. API.

More development time

The fact that Node.js is not shared can also be seen as a weakness by some developers. As a substitute, Ruby on Rails gives you lots of instructions on new installations and guides you into how they do things, but with Node.js, when you need to find out everything from scratch. This can go beyond a decrease in productivity, delaying your work. However, if you work closely with a team of experienced programmers who have developed a good process for developing and maintaining code, you don’t need to worry about efficiency.

Not Suitable for Heavy-Computing Applications

Node.js does not yet support multi-threaded programming. This can help applications that are more complicated than Ruby but are not suitable for carrying out old calculations. Demands greater than expected. While Node.js is very suitable for complex applications, in complex applications that require multiple applications, its performance is less effective.

Tools that are not mature enough

Although the core Node.js is stable, many packages in the npm registry (pre-installed package manager nodes that are managed and managed by third-party Node.js programs) are still of poor quality or have not been properly documented. Because most are open source ecosystems, many tools have not been monitored and may not be of quality and fail to meet coding standards. The npm structure makes it more difficult to find reliable packages. Because of this, you might need more experienced developers who can find tools you can trust.

Mulai Menggunakan Node.JS

The first thing to read is Node.JS is JavaScript. Why can’t we use functionality based on JavaScript events on the client to the server? It is this thought that might drive the development of Node.js.

What is Node.js

The main highlight of Node.js is event-based asynchronous functions. Node.js. use loop events instead of waiting for I / O operations (access external web services, access hardware).

Node.js can still exploit its processing power while the server is waiting for other operations. This makes Node.js measurable for millions of concurrent connections.

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