New Node.js 12 features will see it disrupt AI, IoT and more surprising areas

Originally published by Adam Polak at tsh.io

This is why so many companies are willing to give it a shot. However, with the release of a new LTS (long-term support) version, Node.js will gain a lot of new features every Node.js developer can be excited about. Why? That’s because the new Node.js 12 features and the possibilities they create are simply that amazing!

Threads are almost stable!

With the last LTS we’ve got access to threads. Of course, it was an experimental feature and required a special flag called –experimental-worker for it to work.

With the upcoming LTS (Node 12) it’s still experimental, but won’t require a flag anymore. We are getting closer to a stable version!

ES modules support

Let’s face it, ES modules are currently the way to go in JavaScript development. We are using it in our frontend apps. We are using it on our desktop or even mobile apps. And yet, in case of Node we were stuck with common.js modules.

Of course, we could use Babel or Typescript, but since Node.js is a backend technology, the only thing we should care about is a Node version installed on the server. We don’t need to care about multiple different browsers and support for them, so what’s the point of installing a tool that was made precisely with that in mind (Babel/Webpack etc.)?

With Node 10, we could finally play a little with ES modules (current LTS has experimental implementation for modules), but it required us to use special file extension – .mjs (module javascript).

With Node 12, it’s getting a little bit easier to work with. Much like it is with web apps, we get a special property type called that will define if code should be treated like common.js or es module.

The only thing you need to do to treat all your files as a module is to add the property type with the value module to your package.json.

{
  "type": "module"
}

From now on, if this package.json is the closest to our .js file, it will be treated like a module. No more mjs (we can still use it if we want to)!

So, what if we wanted to use some common.js code?

As long as the closest package.json does not contain a module type property, it will be treated like common.js code.

What’s more, we are getting new an extension called cjs – a common.js file.

Every mjs file is treated as a module and every cjs as a common.js file.

If you didn’t have a chance to try it out, now is the time!

JS and private variables

When it comes to JavaScript, we have always struggled to protect some data in our classes/functions from the outside.

JS is famous for its monkey patching, meaning we could always somehow access almost everything.

We tried with closures, symbols and more to simulate private-like variables. Node 12 ships with the new V8 and so we’ve got access to one cool feature – private properties in the class.

I’m sure you all remember the old approach to privates in Node:

class MyClass {
  constructor() {
    this._x = 10
  }
get x() {

return this._x

}

}

We all know it’s not really a private – we are still able to access it anyway, but most of IDEs treated it like a private field and most of Node devs knew about this convention. Finally, we can all forget about it.

class MyClass {

#x = 10

get x() {

return this.#x

}

}

Can you see the difference? Yes, we use # character to tell Node that this variable is private and we want it to be accessible only from the inside of this class.

Try to access it directly, you’ll get an error that this variable does not exists.

Sadly some IDE do not recognize them as proper variables yet.

Flat and flatMap

With Node 12, we’re getting access to new JavaScript features.

First of all, we’re getting access to new array methods – flat and flatMap. The first one is similar to Lodash’s flattenDepth method.

If we pass a nested arrays to it, we will get a flatten array as a result.

[10, [20, 30], [40, 50, [60, 70]]].flat() // => [10, 20, 30, 40, 50, [60, 70]]

[10, [20, 30], [40, 50, [60, 70]]].flat(2) // => [10, 20, 30, 40, 50, 60, 70]

As you can see, it also has a special parameter – depth. By using it, you can decide how many levels down you want to flatten.

The second one – flatMap – works just like map, followed by flat 🙂

Optional catch binding

Another new feature is optional catch binding. Until now we always had to define an error variable for try – catch.

try {

someMethod()

} catch(err) {

// err is required

}

With Node 12 we can’t skip the entire catch clause, but we can skip the variable at least.

try {

someMethod()

} catch {

// err is optional

}

Object.fromEntries

Another new JavaScript feature is the Object.fromEntries method. It’s main usage is to create an object either from Map or from a key/value array.

Object.fromEntries(new Map([[‘key’, ‘value’], [‘otherKey’, ‘otherValue’]]));

// { key: ‘value’, otherKey: ‘otherValue’ }

Object.fromEntries([[‘key’, ‘value’], [‘otherKey’, ‘otherValue’]]);

// { key: ‘value’, otherKey: ‘otherValue’ }

V8 changes

I did mention that the new Node comes with the V8. This gives us not only access to the private field, but also some performance optimizations.

Awaits should work much faster, as should JS parsing.

Our apps should load quicker and asyncs should be much easier to debug, because we’re finally getting stack traces for them.

What’s more, the heap size is getting changed. Until now, it was either 700MB (for 32bit systems) or 1400MB (for 64bit). With new changes, it’s based on the available memory!

12 is coming!

I don’t know about you, but I’m waiting for Node 12. We are still a few months (October 2019 is the planned release date) from an official change to 12 as LTS, but the features we are getting are very promising.

Just a few more months!

The new Node.js is all about threads!

If there is one thing we can all agree on, it’s that every programming language has its pros and cons. Most popular technologies have found their own niche in the world of technology. Node.js is no exception.

We’ve been told for years that Node.js is good for API gateways and real-time dashboards (e.g. with websockets). As a matter of fact, its design itself forced us to depend on the microservice architecture to overcome some of its common obstacles.

At the end of the day, we knew that Node.js was simply not meant for time-consuming, CPU-heavy computation or blocking operations due to its single-threaded design. This is the nature of the event loop itself.

If we block the loop with a complex synchronous operation, it won’t be able to do anything until it’s done. That’s the very reason we use async so heavily or move time-consuming logic to a separate microservice.

This workaround may no longer be necessary thanks to new Node.js features that debuted in its 10 version. The tool that will make the difference are worker threads. Finally, Node.js will be able to excel in fields where normally we would use a different language.

A good example could be AI, machine learning or big data processing. Previously, all of those required CPU-heavy computation, which left us no choice, but to build another service or pick a better-suited language. No more.

Threads!? But how?

This new Node.js feature is still experimental – it’s not meant to be used in a production environment just yet. Still, we are free to play with it. So where do we start?

Starting from Node 12+ we no longer need to use special feature flag –experimental-worker.Workers are on by default!

node index.js

Now we can take full advantage of the worker_threads module. Let’s start with a simple HTTP server with two methods:

• GET /hello (returning JSON object with “Hello World” message),
• GET /compute (loading a big JSON file multiple times using a synchronous method).

const express = require(‘express’);

const fs = require(‘fs’);

const app = express();
app.get(‘/hello’, (req, res) => {

res.json({

message: ‘Hello world!’

})

});
app.get(‘/compute’, (req, res) => {

let json = {};

for (let i=0;i<100;i++) {

json = JSON.parse(fs.readFileSync(‘./big-file.json’, ‘utf8’));

}
json.data.sort((a, b) => a.index - b.index);
res.json({

message: ‘done’

})

});
app.listen(3000);

The results are easy to predict. When GET /compute and /hello are called simultaneously, we have to wait for the compute path to finish before we can get a response from our hello path. The Event loop is blocked until file loading is done.

Let’s fix it with threads!

const express = require(‘express’);

const fs = require(‘fs’);

const { Worker, isMainThread, parentPort, workerData } = require(‘worker_threads’);

if (isMainThread) {

console.log(“Spawn http server”);
const app = express();
app.get(‘/hello’, (req, res) => {

res.json({

message: ‘Hello world!’

})

});
app.get(‘/compute’, (req, res) => {
const worker = new Worker(__filename, {workerData: null});
worker.on('message', (msg) => {
  res.json({
    message: 'done'
  });
})
worker.on('error', console.error);
  worker.on('exit', (code) => {
	if(code != 0)
      console.error(new Error(`Worker stopped with exit code ${code}`))
});

});
app.listen(3000);

} else {

let json = {};

for (let i=0;i<100;i++) {

json = JSON.parse(fs.readFileSync(‘./big-file.json’, ‘utf8’));

}
json.data.sort((a, b) => a.index - b.index);
parentPort.postMessage({});

}

As you can see, the syntax is very similar to what we know from Node.js scaling with Cluster. But the interesting part begins here.

Try to call both paths at the same time. Noticed something? Indeed, the event loop is no longer blocked so we can call /hello during file loading.

Now, this is something we have all been waiting for! All that’s left is to wait for a stable API.

Want even more new Node.js features? Here is an N-API for building C/C++ modules!

The raw speed of Node.js is one of the reason we choose this technology. Worker threads are the next step to improve it. But is it really enough?

Node.js is a C-based technology. Naturally, we use JavaScript as a main programming language. But what if we could use C for more complex computation?

Node.js 10 gives us a stable N-API. It’s a standardized API for native modules, making it possible to build modules in C/C++ or even Rust. Sounds cool, doesn’t it?

Building native Node.js modules in C/C++ has just got way easier

A very simple native module can look like this:

#include <napi.h>

#include <math.h>

namespace helloworld {

Napi::Value Method(const Napi::CallbackInfo& info) {

Napi::Env env = info.Env();

return Napi::String::New(env, “hello world”);

}
Napi::Object Init(Napi::Env env, Napi::Object exports) {
    exports.Set(Napi::String::New(env, "hello"),
                Napi::Function::New(env, Method));
    return exports;
}

NODE_API_MODULE(NODE_GYP_MODULE_NAME, Init)

}

If you have a basic knowledge of C++, it’s not too hard to write a custom module. The only thing you need to remember is to convert C++ types to Node.js at the end of your module.

Next thing we need is binding:

{

“targets”: [

{

“target_name”: “helloworld”,

“sources”: [ “hello-world.cpp”],

“include_dirs”: [“<!@(node -p “require(‘node-addon-api’).include”)”],

“dependencies”: [“<!(node -p “require(‘node-addon-api’).gyp”)”],

“defines”: [ ‘NAPI_DISABLE_CPP_EXCEPTIONS’ ]

}

]

}

This simple configuration allows us to build *.cpp files, so we can later use them in Node.js apps.

Before we can make use of it in our JavaScript code, we have to build it and configure our package.json to look for gypfile (binding file).

{

“name”: “n-api-example”,

“version”: “1.0.0”,

“description”: “”,

“main”: “index.js”,

“scripts”: {

“install”: “node-gyp rebuild”

},

“gypfile”: true,

“keywords”: [],

“author”: “”,

“license”: “ISC”,

“dependencies”: {

“node-addon-api”: “^1.5.0”,

“node-gyp”: “^3.8.0”

}

}

Once the module is good to go, we can use the node-gyp rebuild command to build and then require it in our code. Just like any popular module we use!

const addon = require(‘./build/Release/helloworld.node’);

console.log(addon.hello());

Together with worker threads, N-API gives us a pretty good set of tools to build high-performance apps. Forget APIs or dashboards – even complex data processing or machine learning systems are far from impossible. Awesome!

Full support for HTTP/2 in Node.js? Sure, why not!

We’re able to compute faster. We’re able to compute in parallel. So how about assets and pages serving?

For years, we were stuck with the good old http module and HTTP/1.1. As more and more assets are being served by our servers, we increasingly struggle with loading times. Every browser has a maximum number of simultaneous persistent connections per server/proxy, especially for HTTP/1.1. With HTTP/2 support, we can finally kiss this problem goodbye.

So where do we start? Do you remember this basic Node.js server example from every tutorial on web ever? Yep, this one:

const http = require(‘http’);

http.createServer(function (req, res) {

res.write(‘Hello World!’);

res.end();

}).listen(3000);

With Node.js 10, we get a new http2 module allowing us to use HTTP/2.0! Finally!

const http = require(‘http2’);

const fs = require(‘fs’);

const options = {

key: fs.readFileSync(‘example.key’),

cert: fs.readFileSync(‘example.crt’)

};
http.createSecureServer(options, function (req, res) {

res.write(‘Hello World!’);

res.end();

}).listen(3000);

Full HTTP/2 support in Node.js 10 is what we have all been waiting for

With these new features, the future of Node.js is bright

The new Node.js features bring fresh air to our tech ecosystem. They open up completely new possibilities for Node.js. Have you ever imagined that this technology could one day be used for image processing or data science? Neither have I.

This version gives us even more long-awaited features such as support for es modules (still experimental, though) or changes to fs methods, which finally use promises rather than callbacks.

Want even more new Node.js features? Watch this short video.

As you can see from the chart below, the popularity of Node.js seems to have peaked in early 2017, after years and years of growth. It’s not really a sign of slowdown, but rather of maturation of this technology.

However, I can definitely see how all of these new improvements, as well as the growing popularity of Node.js blockchain apps (based on the truffle.js framework), may give Node.js a further boost so that it can blossom again – in new types of projects, roles and circumstances.

Originally published by Adam Polak at tsh.io

=============================

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☞ The Complete Node.js Developer Course (3rd Edition)

☞ Angular & NodeJS - The MEAN Stack Guide

☞ NodeJS - The Complete Guide (incl. MVC, REST APIs, GraphQL)

☞ Docker for Node.js Projects From a Docker Captain

☞ Intro To MySQL With Node.js - Learn To Use MySQL with Node!

☞ Node.js Absolute Beginners Guide - Learn Node From Scratch

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☞ Complete Next.js with React & Node - Beautiful Portfolio App

☞ Build a Blockchain & Cryptocurrency | Full-Stack Edition

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What is GEEK

Buddha Community

NBB: Ad-hoc CLJS Scripting on Node.js

Nbb

Not babashka. Node.js babashka!?

Ad-hoc CLJS scripting on Node.js.

Status

Experimental. Please report issues here.

Goals and features

Nbb's main goal is to make it easy to get started with ad hoc CLJS scripting on Node.js.

Additional goals and features are:

• Fast startup without relying on a custom version of Node.js.
• Small artifact (current size is around 1.2MB).
• First class macros.
• Support building small TUI apps using Reagent.
• Complement babashka with libraries from the Node.js ecosystem.

Requirements

Nbb requires Node.js v12 or newer.

How does this tool work?

CLJS code is evaluated through SCI, the same interpreter that powers babashka. Because SCI works with advanced compilation, the bundle size, especially when combined with other dependencies, is smaller than what you get with self-hosted CLJS. That makes startup faster. The trade-off is that execution is less performant and that only a subset of CLJS is available (e.g. no deftype, yet).

Usage

Install nbb from NPM:

$ npm install nbb -g

Omit -g for a local install.

Try out an expression:

$ nbb -e '(+ 1 2 3)'
6

And then install some other NPM libraries to use in the script. E.g.:

$ npm install csv-parse shelljs zx

Create a script which uses the NPM libraries:

(ns script
  (:require ["csv-parse/lib/sync$default" :as csv-parse]
            ["fs" :as fs]
            ["path" :as path]
            ["shelljs$default" :as sh]
            ["term-size$default" :as term-size]
            ["zx$default" :as zx]
            ["zx$fs" :as zxfs]
            [nbb.core :refer [*file*]]))

(prn (path/resolve "."))

(prn (term-size))

(println (count (str (fs/readFileSync *file*))))

(prn (sh/ls "."))

(prn (csv-parse "foo,bar"))

(prn (zxfs/existsSync *file*))

(zx/$ #js ["ls"])

Call the script:

$ nbb script.cljs
"/private/tmp/test-script"
#js {:columns 216, :rows 47}
510
#js ["node_modules" "package-lock.json" "package.json" "script.cljs"]
#js [#js ["foo" "bar"]]
true
$ ls
node_modules
package-lock.json
package.json
script.cljs

Macros

Nbb has first class support for macros: you can define them right inside your .cljs file, like you are used to from JVM Clojure. Consider the plet macro to make working with promises more palatable:

(defmacro plet
  [bindings & body]
  (let [binding-pairs (reverse (partition 2 bindings))
        body (cons 'do body)]
    (reduce (fn [body [sym expr]]
              (let [expr (list '.resolve 'js/Promise expr)]
                (list '.then expr (list 'clojure.core/fn (vector sym)
                                        body))))
            body
            binding-pairs)))

Using this macro we can look async code more like sync code. Consider this puppeteer example:

(-> (.launch puppeteer)
      (.then (fn [browser]
               (-> (.newPage browser)
                   (.then (fn [page]
                            (-> (.goto page "https://clojure.org")
                                (.then #(.screenshot page #js{:path "screenshot.png"}))
                                (.catch #(js/console.log %))
                                (.then #(.close browser)))))))))

Using plet this becomes:

(plet [browser (.launch puppeteer)
       page (.newPage browser)
       _ (.goto page "https://clojure.org")
       _ (-> (.screenshot page #js{:path "screenshot.png"})
             (.catch #(js/console.log %)))]
      (.close browser))

See the puppeteer example for the full code.

Since v0.0.36, nbb includes promesa which is a library to deal with promises. The above plet macro is similar to promesa.core/let.

Startup time

$ time nbb -e '(+ 1 2 3)'
6
nbb -e '(+ 1 2 3)'   0.17s  user 0.02s system 109% cpu 0.168 total

The baseline startup time for a script is about 170ms seconds on my laptop. When invoked via npx this adds another 300ms or so, so for faster startup, either use a globally installed nbb or use $(npm bin)/nbb script.cljs to bypass npx.

Dependencies

NPM dependencies

Nbb does not depend on any NPM dependencies. All NPM libraries loaded by a script are resolved relative to that script. When using the Reagent module, React is resolved in the same way as any other NPM library.

Classpath

To load .cljs files from local paths or dependencies, you can use the --classpath argument. The current dir is added to the classpath automatically. So if there is a file foo/bar.cljs relative to your current dir, then you can load it via (:require [foo.bar :as fb]). Note that nbb uses the same naming conventions for namespaces and directories as other Clojure tools: foo-bar in the namespace name becomes foo_bar in the directory name.

To load dependencies from the Clojure ecosystem, you can use the Clojure CLI or babashka to download them and produce a classpath:

$ classpath="$(clojure -A:nbb -Spath -Sdeps '{:aliases {:nbb {:replace-deps {com.github.seancorfield/honeysql {:git/tag "v2.0.0-rc5" :git/sha "01c3a55"}}}}}')"

and then feed it to the --classpath argument:

$ nbb --classpath "$classpath" -e "(require '[honey.sql :as sql]) (sql/format {:select :foo :from :bar :where [:= :baz 2]})"
["SELECT foo FROM bar WHERE baz = ?" 2]

Currently nbb only reads from directories, not jar files, so you are encouraged to use git libs. Support for .jar files will be added later.

Current file

The name of the file that is currently being executed is available via nbb.core/*file* or on the metadata of vars:

(ns foo
  (:require [nbb.core :refer [*file*]]))

(prn *file*) ;; "/private/tmp/foo.cljs"

(defn f [])
(prn (:file (meta #'f))) ;; "/private/tmp/foo.cljs"

Reagent

Nbb includes reagent.core which will be lazily loaded when required. You can use this together with ink to create a TUI application:

$ npm install ink

ink-demo.cljs:

(ns ink-demo
  (:require ["ink" :refer [render Text]]
            [reagent.core :as r]))

(defonce state (r/atom 0))

(doseq [n (range 1 11)]
  (js/setTimeout #(swap! state inc) (* n 500)))

(defn hello []
  [:> Text {:color "green"} "Hello, world! " @state])

(render (r/as-element [hello]))

Promesa

Working with callbacks and promises can become tedious. Since nbb v0.0.36 the promesa.core namespace is included with the let and do! macros. An example:

(ns prom
  (:require [promesa.core :as p]))

(defn sleep [ms]
  (js/Promise.
   (fn [resolve _]
     (js/setTimeout resolve ms))))

(defn do-stuff
  []
  (p/do!
   (println "Doing stuff which takes a while")
   (sleep 1000)
   1))

(p/let [a (do-stuff)
        b (inc a)
        c (do-stuff)
        d (+ b c)]
  (prn d))

$ nbb prom.cljs
Doing stuff which takes a while
Doing stuff which takes a while
3

Also see API docs.

Js-interop

Since nbb v0.0.75 applied-science/js-interop is available:

(ns example
  (:require [applied-science.js-interop :as j]))

(def o (j/lit {:a 1 :b 2 :c {:d 1}}))

(prn (j/select-keys o [:a :b])) ;; #js {:a 1, :b 2}
(prn (j/get-in o [:c :d])) ;; 1

Most of this library is supported in nbb, except the following:

• destructuring using :syms
• property access using .-x notation. In nbb, you must use keywords.

See the example of what is currently supported.

Examples

See the examples directory for small examples.

Also check out these projects built with nbb:

• c64core: retrocompute aesthetics twitter bot
• gallery.cljs: script to download walpapers from windowsonearth.org.
• nbb-action-example: example of a Github action built with nbb.

API

See API documentation.

Migrating to shadow-cljs

See this gist on how to convert an nbb script or project to shadow-cljs.

Build

Prequisites:

• babashka >= 0.4.0
• Clojure CLI >= 1.10.3.933
• Node.js 16.5.0 (lower version may work, but this is the one I used to build)

To build:

• Clone and cd into this repo
• bb release

Run bb tasks for more project-related tasks.

Download Details:
Author: borkdude
Download Link: Download The Source Code
Official Website: https://github.com/borkdude/nbb 
License: EPL-1.0

#node #javascript

Hire Dedicated Node.js Developers - Hire Node.js Developers

If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.

If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.

WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.

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Everything around us has become smart, like smart infrastructures, smart cities, autonomous vehicles, to name a few. The innovation of smart devices makes it possible to achieve these heights in science and technology. But, data is vulnerable, there is a risk of attack by cybercriminals. To get started, let’s know about IoT devices.

What are IoT devices?

The Internet Of Things(IoT) is a system that interrelates computer devices like sensors, software, and actuators, digital machines, etc. They are linked together with particular objects that work through the internet and transfer data over devices without humans interference.

Famous examples are Amazon Alexa, Apple SIRI, Interconnected baby monitors, video doorbells, and smart thermostats.

How could your IoT devices be vulnerable?

When technologies grow and evolve, risks are also on the high stakes. Ransomware attacks are on the continuous increase; securing data has become the top priority.

When you think your smart home won’t fudge a thing against cybercriminals, you should also know that they are vulnerable. When cybercriminals access our smart voice speakers like Amazon Alexa or Apple Siri, it becomes easy for them to steal your data.

Cybersecurity report 2020 says popular hacking forums expose 770 million email addresses and 21 million unique passwords, 620 million accounts have been compromised from 16 hacked websites.

The attacks are likely to increase every year. To help you secure your data of IoT devices, here are some best tips you can implement.

Tips to secure your IoT devices

1. Change Default Router Name

Your router has the default name of make and model. When we stick with the manufacturer name, attackers can quickly identify our make and model. So give the router name different from your addresses, without giving away personal information.

2. Know your connected network and connected devices

If your devices are connected to the internet, these connections are vulnerable to cyber attacks when your devices don’t have the proper security. Almost every web interface is equipped with multiple devices, so it’s hard to track the device. But, it’s crucial to stay aware of them.

3. Change default usernames and passwords

When we use the default usernames and passwords, it is attackable. Because the cybercriminals possibly know the default passwords come with IoT devices. So use strong passwords to access our IoT devices.

4. Manage strong, Unique passwords for your IoT devices and accounts

Use strong or unique passwords that are easily assumed, such as ‘123456’ or ‘password1234’ to protect your accounts. Give strong and complex passwords formed by combinations of alphabets, numeric, and not easily bypassed symbols.

Also, change passwords for multiple accounts and change them regularly to avoid attacks. We can also set several attempts to wrong passwords to set locking the account to safeguard from the hackers.

5. Do not use Public WI-FI Networks

Are you try to keep an eye on your IoT devices through your mobile devices in different locations. I recommend you not to use the public WI-FI network to access them. Because they are easily accessible through for everyone, you are still in a hurry to access, use VPN that gives them protection against cyber-attacks, giving them privacy and security features, for example, using Express VPN.

6. Establish firewalls to discover the vulnerabilities

There are software and firewalls like intrusion detection system/intrusion prevention system in the market. This will be useful to screen and analyze the wire traffic of a network. You can identify the security weakness by the firewall scanners within the network structure. Use these firewalls to get rid of unwanted security issues and vulnerabilities.

7. Reconfigure your device settings

Every smart device comes with the insecure default settings, and sometimes we are not able to change these default settings configurations. These conditions need to be assessed and need to reconfigure the default settings.

8. Authenticate the IoT applications

Nowadays, every smart app offers authentication to secure the accounts. There are many types of authentication methods like single-factor authentication, two-step authentication, and multi-factor authentication. Use any one of these to send a one time password (OTP) to verify the user who logs in the smart device to keep our accounts from falling into the wrong hands.

9. Update the device software up to date

Every smart device manufacturer releases updates to fix bugs in their software. These security patches help us to improve our protection of the device. Also, update the software on the smartphone, which we are used to monitoring the IoT devices to avoid vulnerabilities.

10. Track the smartphones and keep them safe

When we connect the smart home to the smartphone and control them via smartphone, you need to keep them safe. If you miss the phone almost, every personal information is at risk to the cybercriminals. But sometimes it happens by accident, makes sure that you can clear all the data remotely.

However, securing smart devices is essential in the world of data. There are still cybercriminals bypassing the securities. So make sure to do the safety measures to avoid our accounts falling out into the wrong hands. I hope these steps will help you all to secure your IoT devices.

If you have any, feel free to share them in the comments! I’d love to know them.

Are you looking for more? Subscribe to weekly newsletters that can help your stay updated IoT application developments.

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Why use Node.js for Web Development? Benefits and Examples of Apps

Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices. 

Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend. 

What is Node.js? 

Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently. 

The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.

What Are the Advantages of Node.js Web Application Development? 

Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers. 

Amazing Tech Stack for Web Development 

The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module. 

Alongside prevalence, Node.js additionally acquired the fundamental JS benefits: 

• quick execution and information preparing; 
• exceptionally reusable code; 
• the code is not difficult to learn, compose, read, and keep up; 
• tremendous asset library, a huge number of free aides, and a functioning local area. 

In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development). 

Designers Can Utilize JavaScript for the Whole Undertaking 

This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable. 

In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based. 

A Quick Environment for Microservice Development 

There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations). 

Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.

Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while. 

Versatile Web Application Development 

Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements. 

Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility. 

Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root. 

What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations. 

Control Stream Highlights

Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation. 

In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.

 

Final Words

So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development. 

I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call. 

Good Luck!

Original Source

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Node JS Development Company| Node JS Web Developers-SISGAIN

Top organizations and start-ups hire Node.js developers from SISGAIN for their strategic software development projects in Illinois, USA. On the off chance that you are searching for a first rate innovation to assemble a constant Node.js web application development or a module, Node.js applications are the most appropriate alternative to pick. As Leading Node.js development company, we leverage our profound information on its segments and convey solutions that bring noteworthy business results. For more information email us at hello@sisgain.com

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