Why Node.js? When To Use Node.js?
Node.js unravels concurrency by supplanting the Java platform’s standard, multithreaded methodology with single-threaded, event driven I/O. In this article, we discuss Node.js and clarify why its event driven concurrency has started so much intrigue, even among hardcore Java developers.
We then demonstrate you some Node.js best practices to influence Node’s Express framework, Mongolian DeadBeef, and MongoDB to assemble a concurrent, adaptable, and persistent web application.
Some Historical Background
What Is Node.js?
In this article, we will begin with a structural outline of what makes Node extraordinary, and after that we’ll demonstrate industry standards to swiftly build an adaptable web application that influences MongoDB for information industriousness. As a reader, you can observe that, how fun Node is, and how rapidly one can use it to build a working web application.
Why Node.js is So Popular?
There are many reasons all tech giants are loving node.js. More and more applications are being developed using Node.js and its getting adopted by industry really fast. Here are some obviously visible reasons whey Node.js is so popular.
Easy To Learn
Node.js Has Cross Platform Support
Node.js is available on all popular operating systems including Linux, Windows and Mac OSX. An easy installer is available for all environments.
Node.js Scalability and High Performance
The main reason for quick adoption of Node.js is its performance on production systems. Many high traffic production systems are deployed and being served with Node.js. Companies like Paypal and Walmart have reported their Node.js apps are performing really well in high volume traffic and easily scaled up.
Node’s Event Driven Concurrency
Event driven I/O may sound remote to a Java developer’s ears, yet it isn’t too new. Instead of the multithreaded programming model we’re used to on the Java platform, Node’s way to deal with concurrency is single-threaded, with the extra kick of an event loop. This Node build empowers non-blocking or asynchronous I/O. In Node, invocations that commonly would block, for example, waiting for database query results, don’t.
Instead of hold up for costly I/O exercises to finish, a Node application issues a callback. At the point when an asset is given back, the joined callback is summoned non-concurrently.
Concurrency just works in Node programs. If I needed to run the past scenario on the Java platform, I would have my decision of complex and prolonged methodologies — from conventional threads to fresher libraries in Java NIO and even the enhanced and redesigned java.util.concurrent package.
While Java concurrency is capable, it can be hard to comprehend — which translates to code. Node’s callback system, by examination, is incorporated with the language; you don’t need special constructs like synchronized to make it work. Node’s concurrency model is amazingly simple, and that makes it accessible to a wider audience of developers
Better Talent Availability and Retention
Though you can find thousands of Java developers, however the availability of Node.js developers is not poor either. The Node.js developers are plenty on best freelance websites.
Node.js community is very active and quick help is always available on popular forums and discussion boards. Stackoverflow has 80K+ questions that are asked by people and very few are unanswered.
Plenty Of Useful Tools For Developers
Easy Node.js Hosting
Though you can go for a dedicated hosting servers options and easily setup your own Node.js infrastructure. However there are many easy to setup hosting providers available for Node.js environment. These providers already have a basic setup for Node.js applications and helps you quickly get to your business.
Here is a list of hosting providers that support Node.js
Why Pick Node.js?
The Java platform’s approach to concurrency served to set up its leading part in big enterprise development, and that isn’t likely to change. Frameworks like Netty (and Gretty) and center libraries like NIO, and also java.util.concurrent, have settled on the JVM a top decision for concurrency.
What’s unique about Node is that it is a current development environment particularly intended to determine the difficulties of simultaneous programming. Node’s event driven programming ideal model implies that you needn’t bother with extra libraries to make concurrency work, and that is uplifting news for developers peering toward multicore equipment.
Where Can We Use Node.js?
There are many web application scenario where node.js works much better than a traditional server side programming language like java or PHP. The main advantage of Node.js is use of real time two way connection between client and server. This make node.js a popular choice for rich client applications that has many small components that can be interacting with server in parallel.
If you want to create a dashboard application with multiple types of data formats and components on a page. Node.js may be a good choice. Some practical applications where node.js may go really well are listed below.
- Displaying a Stock market dashboard
- Website monitoring dashboard for dev ops
- Live network stats on a web page
- Production system monitoring dashboard
- Chat application
- Applications that run on JSON based NOSQL databases.
- Applications that require interaction with Mobile device and native apps.
- Applications that require interaction with Internet of things (IOT) based devices
Where Should We NOT Use Node.js?
Just like any other option, Node.js is not a one size fits all solution for all your problems. Below are types of system where node.js may not be a good choice.
- Applications that involve heavy computations and require more CPU processing
- Applications that interact with relational database like Oracle, MySQL or Postgress