Trends and subjects in the IT industry are changing at an incredible rate. What is experiencing a surge of popularity now is likely to be inefficient in a year. Well, maybe two years. Should Node.js developers worry about that, and is this technology going to remain popular and in-demand this year?

As a top provider of Node.js developers for international projects, we took the liberty of analyzing industry trends and summing up what developers and businesses can expect in 2021. Let’s dig a little deeper into the numbers and data, and see what’s what.

Node.js: An Overview

Stack Overflow names Node.js among the most popular and convenient back-end development frameworks. Wikipedia used to define it as a library until recently. I go with the environment, which is the most right definition.

Node.js is an alternative to the client/server model where the server responds only to a client request and closes the connection after each response. Two-way connection and interactive communication between the server and the user’s browser allows you to achieve high throughput while reducing delays.

Now, what does it all mean? It means increasing the app efficiency by almost 50%, reducing waiting time by 35%, and, accordingly, cost-cutting. Good reasons to think this is exactly what a startup needs, isn’t it? That’s one of the key factors that cause the constant growth of Node.js popularity — startups have been mushrooming, and it will not change.

Popularity Reasons

Node.js has substantial benefits you can’t deny, no matter whether you are a fan or went the other way.

— Cashing

Node.js includes the ability to cache. In other words, the data remains in storage for potential future use. When you request data, it is immediately available. This positively reflects on the app speed.

— Availability for many Hosting Services

This one is a logical consequence of Node.js evolution, its improvement, and refinement. Thus, we have an environment accessible to many hosting providers.

— ‘Ergonomic’

The use of Google V8 JavaScript engine, built on C++ has a positive effect on ‘ergonomic’ characteristics — adds a technology more speed and lightness.

— Cross-Platform

The ability to develop apps on Node.js for both Android and iOS is a cherry on the cake. 

Performance Benefits

Here we have 5 core Node.js benefits. I can bet good money you know some of them (or all of them, or more), but once we are digging, not to mention them would be an unacceptable sin.

— Modern Architecture and Scalability

Microservices are getting extremely popular today as they allow iterative development and fast scalability of the software. Node.js propels communication among the parts of the applications (APIs of microservices) making it run faster. It allows scaling apps without decreasing speed or performance.

— Less Time to Market

The Node.js library counts 700,000 modules on the NPM. Using a ready-made module significantly reduces development time, because you have no need to write the code yourself. Such a significant number of modules save you a great deal of time. In the Node.js survey for 2018, 68% of developers and project managers confirmed that the use of this environment has the greatest positive impact on productivity.

— Fast Playback

With every next year and every update, users expect faster and more functional apps. We already know that speed is what Node.js deserves admiration for. The speed of delivering back-end services is not just consistently high but continues to grow. Speed ​​increases = user satisfaction increases — exactly what we want.

— Open Source Community

An open-source technology means not only a possibility for you to use it for free but a chance to collaborate with talented and dedicated developers from all around the globe. Thus, Node.js is not so much about money as it is about creating a strong and motivated community that is constantly evolving and sharing ideas. It’s a win-win situation for all sides.

When to Use Node.js

Real-Time Apps. Real-Time Apps, also known as RTA, provide the ability to exchange a great number of text messages in real-time and require minimal delays. Among the most popular apps having this capability and built on Node.js are Yahoo, LinkedIn, Uber. We know enough about their performance, aren’t we?

Data Streaming. Data streaming and downloading multiple files in parallel is also a reason to appreciate Node.js. To prove this point, let’s look at Netflix built on Node.js.

Servers API. Server API development is another purpose you can use Node.js for. The technology allows you simultaneously support lots of parallel connections and easily convert JavaScript to JSON format.

DevOps Projects. Continual development and integration are the pillars of DevOps. Node.js enables you to create microservices quickly and easily for simultaneous building, running, and maintaining the app.

3 Common Mistakes in Work with Node.js

A good camera is not a guarantee of excellent pictures, just like using a great environment can’t guarantee that the final app will be amazing. There are many ways to overwhelm the process, but I’m going to remind you about three crucial mistakes, shockingly common for developers.

— Using Console for Debugging

Out of respect for the significant performance rate of Node.js, don’t use console.log to debug. When you do this, the server restarts and eventually slows down the app. Using condole.log every time something goes wrong will render the code unusable. There’s a decision, an entire library of decisions. The Debug Library was designed to help prevent the logs from getting printed out during the debug mode. All files and documents remain completely secure.

— Not Testing Thoroughly

You can’t say your app is ready while it hasn’t been tested. Testing is a vital part of a development process that, somehow, remains neglected. Constant testing should be a habit, a routine, an integral part of the development process.

You can write tests with ready-made tools like Jasmine and Mocha.

— Not Using Supervisor Programs

No matter where your Node.js code is running, a supervisor program is always beneficial to have. Quite often, when developers design and implement their apps, the code is set to fail fast. When an error occurs, it’s best if you don’t fix it. Instead, let the program crash and have your supervisor restart it. It’s just a matter of seconds.

The supervisor program has numerous advantages. It not only restarts the program when it crashes but also does when files change. Using supervisors is one of the best Node.js practices. It makes the development process way easier and brings you closer to the release day.

The most popular supervisor apps are Supervisor and Nodemon. Try them out and choose the most convenient one. Welcome to a brave new world.

To Sum Up

Node.js in 2021 looks like a massive trend that is going to evolve even more and Node.js developers remain to be hugely demanded. Right now we are looking for Middle and Senior Node.js Developers, check out our vacancy page.