Game of Thrones – Time Before and After Node.JS

Node.JS Development Technology

JavaScript and her trusted lieutenant Node.JS – Do they plan to conquer the world?

Mobile apps, web apps, cloud computing, wearable tech, IoT devices – all of them have been invaded by JavaScript. Today, it looks like there is nothing much going around without JavaScript.

In Eric Eliott’s (author of Programming JS Applications and cofounder of DevAnywhere.io) words, it’s sounding even worse. “Software is eating the world, the web is eating software and JavaScript rules the web.”

So many Node.JS Development Companies and Node.JS Developers are coming to the forefront and still the industry is experiencing shortage of experts. Through all the tech fog, one common theme is emerging: almost everybody knows Node.JS, but almost nobody really understands Node.JS.

We are Addicted to JavaScript/Node

Of course you can code in many other languages. But Node.JS is taking over the server side, and compile-to-JS languages are not even half strong as the next strongest programming language. JavaScript’s standard package repository, NPM, is the largest package repository in the world and still growing.

The fact is that most of the world’s software infrastructure is heavily dependent on JavaScript. But few developers truly understand the programming language.

If you are an expert in front-end code, then you shouldn’t be finding it tough to write web apps with Node.JS since both rely heavily on JavaScript.

First, let’s understand the fact that Node isn’t a panacea; it’s not the solution for any project. Starting a server in Node is the easy part, but it requires a sound understanding of Node to create web apps.

Regarding time, there are only two kinds now: Before Node and After Node!
Let’s see what happened during the “before Node” time.

Time before Node.JS

Web apps run in a client/server model in which the client requests in a web browser. Basically, the client demands resources from the server and the server responds with resources. After the client request, the server closes the connection after each response. This process is efficient where the connection closes after the request is served and the server could respond to other requests also.

How does the server respond when there are a million requests coming in at the same time?

Now probably we would start thinking it would not be nice to tell the server to hold off all other requests until one request is dealt with.

Can you ever imagine Facebook asking you to wait for 10 minutes because it has thousands of people who requested before you? We better have a way to run all these requests at once. Thankfully, we have. It’s called thread.

Are you still with me? Good. Let’s see what a thread is.

A thread is the unit of execution within a process. A process can have anywhere from just one thread to multiple threads. When there are more than one thread, it’s processing a number of things at the same time. If you have heard of parallel processing, this is almost similar to it.

Think about uninvited guests to your house. First a couple arrives, your mom has a smile, invites them in and cooks food for them. Then comes another one, mom still has the smile, somehow manages to cook more food. But then 3 more comes in and mom is acting crazy. More people are coming in and mom alone can’t handle it. A way to solve this problem is to have a few people help her in inviting guests in, cooking, cleaning, etc.

Each thread is a new helper. Requests from browser are the guests. Well, you get the point.

No system is without a flipside. When there are a lot of requests (I’m talking tens and thousands here) and new threads start, it would consume lot of system memory and resources. So comparatively, the earlier method of processing one request, server response to the browser, connection closure and retrieval of resources might start to sound good.

When it comes to CPU intensive applications, the thread system works well. When a new thread handles a new request, it takes the load off the main thread making the system faster.

When you just thought that things can’t get better, enter Node.JS.

Time after Node.JS

A multi-threaded server tells the file system to read a file and sends it to browser. As you will know, file system is a program used to store and retrieve data on a computer.

The Ruby on Rails program which runs the server tells the file system to read the file and return the contents. Here, until the file system is done, Ruby sits idle. Once the file system is done Ruby collects the content and sends it to the browser.

Node.JS, on the other hand, uses this idle time to handle other requests. Node’s “event loop” makes it possible. Let’s say the building blocks of Node are JavaScript and the event loop.

Node.js Development Company

Event loop is a programming construct that waits for and dispatches events or messages in a program – courtesy Wikipedia.

Another significant fact to notice here is that Node is single thread.

Node.JS takes in all requests and it delegates most of them to other system workers. Libuv library handles this work efficiently with the help of OS kernel. Once the system workers finish their processing, they emit events to Node.JS callbacks registered on that event.

Callbacks are functions passed as arguments and are called when certain conditions occur. (By now, I hope you understood the fact that you need to read up more materials on event loop and callbacks.)

Even with a single thread, Node.JS is faster than multi-threaded systems. Apart from the time-consuming numeric and logic computations of programs, they also do things like writing to the file system, pass network requests and access peripheries like a console or an external device. Node is a master of such situations. Node is quick to delegate work to someone else and deals with other incoming requests.

Power to Enterprises from Node.JS

Node Summit 2018 ended with case studies demonstrative of the power of Node.JS which manifested in some of the largest organizations in the world.

Can you see the Node.JS Development Companies grinning?!

Walmart.com had deployed Node APIs to handle 98% of its traffic. Samsclub.com, a member-ship only retail warehouse club owned and operated by Walmart, is now 100% JS based. And what did Walmart gain? It managed to considerably reduce their time to market while their development team took time to understand and developed the entire stack. It is rumored that speed is the primary diver for Walmart’s investments in Node.JS. And they now have every member of the team work on front-end, back-end, mobile and DevOps. They possess great agility now.

Did you know NASA has already made a shift to Node enterprise architecture? Yes, we are talking about the same NASA that sent people to moon and rovers to Mars. The flexibility in creating microservices scalable to support future space travel was the tipping point for NASA. So Node.JS is helping build the future of space travel. How badass is that!!

We Won’t Say We’re the Best Node.JS Development Company (But We Are!)

Through its development over the years, Node.JS has matured and expanded its enterprise capabilities elevating a number of small and large companies. Spericorn is one such company who has significantly benefitted from Node.JS and what started as an experimental experience has grown to a full-fledged Node.JS Development Company with a world-class Node.JS Development Team.

However, Node.JS will need a lot of support in its journey and strong development companies and developers will need to guide its maturation process through.

If you are on the fence about Node.JS, it’s time to choose sides. With Node or without Node. But as you can see future is up ahead using its best pickup lines with Node. Burgeoning Node.JS Development Companies and Node.JS Developers are proof of it. Whether you are building for scale, setting up cloud, or creating a revolutionary application, there’s a Node.JS Development Company who you can trust. Us.