What is an SSL Certificate? Know the Pricing & 6 Main Types of SSL Certificate

What is an SSL Certificate?

SSL is known as Secure Socket Layer. Which is used in almost all modern websites for Encryption purposes to safeguard user data.it is commonly denoted as HTTPS where S stands for SSL. SSL Secure Sockets Layer (SSL) is a protocol developed by Netscape
Communications Corporation and was invented by Taher Elgamal who was chief scientist at Netscape Communications Corporation.

SSL Certificate is a type of Security certificate issued by an authorized Certificate Authority that verifies the identity of the webserver, it is like a message which is scrambled while transmission so that other message intruders like hackers cannot
view the information. SSL ensures transmitted data stays private between client and
server. This protocol enables the client to authenticate the identity of the server, SSL is an industry-standard protocol that is used by several websites for protecting their online transaction credentials with their customers. in simple words, SSL Certificate is a
method of securing data transaction which happens between a client’s Web Browser and Server. It is handled only by the server-side to protect important information of the user who is using the website on a secure browser, Important information such as username, password, and payment credentials are kept in a scrambled form so that it is not visible to anyone and it is tightly protected. It is commonly denoted as https://example.com and
non-SSL certificates are in HTTP format.

What is an SSL Certificate?

Why SSL certificate?

SSL certificate is proof that the publisher of the website uses top-notch security to protect user data and ensure the user that the website is secure to surf and his/her data is very safe with the website. SSL certificate plays an important role in building trust between a user and the website organization. For this assurance purpose, an SSL certificate is invented. it is like a doctor hanging his degree in his clinic that he is qualified to treat his patients. For example, Bill is a Customer of a trading platform called upstox. Bill is accessing his trading account on the upstox platform using upstox trading website now whenever he tries to buy or sell his stocks his sensitive credentials like bank account or debit/credit card details are exposed on the upstox website which can be infiltrated by a
hacker to protect this data an SSL certificate is required.

Why SSL Certificate?

How much does an SSL certificate cost?

SSL is priced as per the usage purpose of the website organization. SSL cost is controlled annually by an organization called Certification Authority it can be used for free for a year
when a user purchases the hosting plan and is also sold on a subscription basis usually renewed.

There are different types of SSL Certificates they are as Follows;

  • Single Domain SSL Certificate

This SSL certificate protects only one domain and subdomain in its
hierarchy. For example, if one manages multiple domains such as
example.com, blog.example.com, and app.example.com, only one of
these can be protected.

This type of certificate can be purchased for $5 per year.

  • Multiple-Domain SSL Certificate

This certificate can protect any of your different domains and
subdomains. For example, you can purchase coverage for
one.example.com, two.example.com, and sample.com — all through
the same SSL certificate.

This SSL certificate is priced from $60 per year.

  • Wildcard SSL Certificate

This SSL certificate protects a domain and all other first-level
subdomains. For example, you can protect not just sample.com, but also
blog.example.com, app.example.com, and other subdomains.

This SSL certificate is priced from $30 per year.

  • Domain validation (DV)

This is fast and direct validation in which the only thing verified is
your ownership of the domain name. 
This is suitable for website owners who do not require any personal
details from visitors and is usually issued within minutes.

A DV certificate is priced at around $70 per year.

  • Organization validation (OV)

After the certificate authority has checked your domain ownership as
well as basic details of the organization. the OV SSL certificate is
issued. Such as its name and location. An OVL SSL certificate
provides a greater level of assurance than domain validation.

Price of an OV certificate is around $150 per year.

  • Extended Validation (EV)

These certificates are issued after checking the physical and legal
existence of the organization, in addition to DV and OV. 
It is the most laborious level of validation, and hence carries the
highest degree of trust and credibility and cost.

The cost of an EV is $200 per year.

How does SSL certificate validation work?

  1. When a user starts to browse the website of his interest the Web browser attempts to connect to a website secured with SSL. The request from the browser is sent to the webserver to identify itself.
  2. If the authentication process is validated successfully then the server sends the browser a copy of its SSL Certificate.
  3. The browser checks whether to trust the SSL certificate.  If the result is positive than the message is sent to the server.
  4. Then the server sends an electronically signed acknowledgment to start an SSL encrypted session.
  5. Encoded data is shared between the web browser and the server.

What will happen if the SSL certificate expires?

An SSL certificate needs to be renewed between 30 to 60 days before expiration. Because the updating of the SSL certificate on the server takes time. When the SSL you are using gets expired your data can get compromised and there is the chance of sensitive data leaking for both the website and the user which affects the authentication process.
As a result, both your website and users are vulnerable to attacks and viruses. For example, a hacker may take advantage of a website with an expired SSL certificate and create a fake website identical to it.

How does an SSL certificate work between client and server?

Here let us assume the webserver belongs to yahoo.
Step 1: When a Browser requests secure pages(HTTPS) from a yahoo web server
Step 2: The Server Sends its Public key with its SSL certificate which is digitally signed by a third party certificate, Which we may call
Certificate Authority or simply CA.

SSL certificate work between client and server.

Step 3: Once our browser gets the certificate, it will check to make sure the certificate is valid as we know a digital signature is created by a CA’s Private Key and our browser either chrome or firefox is previously installed with many major CA’s public keys. Thus digital signature can be verified once the certificate of signature is verified by the digital certificate and can be trusted. Then a green little padlock icon appears in the address bar. The green padlock simply indicates that the web server’s public key belongs to the webserver, not someone else verification is done. 
step 4: Now its time to exchange a secret that is our browser creates one symmetric key or a shared secret it keeps one and gives a copy to the web server, However, my browser does not want to send the shared secret in plain text. Henceforth, it uses the web server’s public key to encrypt the data, and then sends it to the webserver.
Step 5: when the webserver gets the encoded symmetric key, it uses its private key to decrypt it. Then web server gets the browser’s shared key. From now on all the traffic between the client and the webserver will be encrypted and decrypted with the same key. That is the asymmetric key.

Benefits of SSL

  1. The browser can block the client if the SSL certificate is expired or it is not present. The website gives a warning message as “Your connection is not private”, Which will alert the web user to leave the website.
  2. Increased trust With Visitors, When a user visits the site with an SSL certified batch i.e HTTPS he feels secure and he can carry out sensitive transactions which build trust between the visitor and the web-server.
  3. SEO benefits, from 2014 google announced that Websites with SSL certificates are ranked higher in the search results giving the web-server boost in visits and further increasing their profits.
  4. Increased Security, with websites having HTTPS being termed safe for accepting any payments.  SSL certificates protect against spamming the information between
    user and server by keeping information encrypted. So even if hackers intercept the network they will see a scrambled message which is in encrypted form.


To Conclude modern websites must require SSL certificates to carry out their day-to-day tasks efficiently on a secured network. Hence SSL is very much needed for both client and web-Server for effective transmission of data, trust, and safeguarding against malicious

If you are looking for a Shared Hosting with Free SSL then I would recommend using VCCLHosting which provides servers with NVMe/SSD Storage, Free SSL, and More Features.

What is React.JS? Should You Hire React.js Developer?

Should You Hire React.js Freelancers or React.js Development Company

Trying to discover a highly-skilled, capable, and available React.JS developer can feel like looking for a needle in a very huge haystack. ReactJS, as well as the JavaScript language that defines it, is currently one of the most popular and sought-after frameworks in software development.

What is React.JS
What is React.JS

Tech behemoths are constantly on the lookout for JavaScript developers to join their ranks. These developers, who are in charge of delivering in-house apps and services, are currently one of the most in-demand talents in the industry. Streaming services, social media firms, and delivery systems are all vying for the same pool of talented developers.

With so much competition for talent and brainpower, it’s more critical than ever to hire the right individuals. Tell us what you need and we’ll assist you in finding the correct company. We can do the legwork for you and connect you with up to 5 companies that fit your requirements within 72 hours, all for free.

It’s difficult to choose between an outsourced ReactJS team and a freelance application developer with a long and diversified history of developing React projects. The proper solution is as much about the demands of your project and the developer you need as it is about your company’s experience, requirements, and capabilities.

What is React.JS, and how does it work?

React is a front-end JavaScript library for creating user interfaces, to put it simply. React was created to specify how users interact with services and apps. React’s benefits stem mostly from its large developer community, Facebook’s support, and the freedom it provides developers in designing industry-leading user experiences in a short amount of time.

React.JS developers, whether freelancers or outsourced teams have extensive experience and knowledge of how to use the library’s capabilities to create intuitive and responsive user interfaces.

React interfaces are designed to be easy to maintain, re-use, and customize in the future as a component-based library. When hiring freelancers and remote teams, the React library’s unique capabilities pay off since it allows programs to be changed, extended, and maintained in discrete and separated stages significantly more easily than most technologies.

When considering the best way to hire your next React.JS developer, it’s crucial to think about more than simply the engineer or the technology. You should first look at your own criteria before expanding your search to include potential developers.

Benefits of ReactJS

The success of the ReactJS framework is largely due to its numerous advantages. A handful of the most important advantages are described here.

From a business standpoint,

The framework includes dedicated debugging tools to make the process go more smoothly. It also allows developers to debug their code within the browser, thanks to a virtual DOM that contains all of the node tree’s characteristics. The open-source library of the framework can be used by the ReactJS development team. This will make it easier for the developers to work on new features and bug fixes. ReactJS apps don’t require a browser because they’re rendered directly on the server. It’s a very cost-effective framework that’s also SEO-friendly.

ReactJS, in addition to established organizations, minimizes time-to-market and assists startups, which is critical for them. From the developer’s point of view, The public API for the ReactJS platform remains the same, making backward compatibility easier.

It is simpler to learn and offers a concurrent mode for creating user-friendly and quick apps. Custom implementations can be built by ReactJs developers. After learning about the advantages, we’ll dive into the key analyses that will wisely help you recruit ReactJS developers wisely.

Benefits of Using React for Frontend Development in the Workplace

There are a few things to consider when it comes to hiring a ReactJS developer. Recruiting a reactjs developer is a key component of the core analysis. It is critical for the company to have a clear understanding of its goals. Because it will make it easier for them to find an authentic ReactJS developer.

Before picking between a freelance React.JS developer and an outsourced React.JS team, ask yourself the following questions: Do you want to keep a tight eye on your project or do you want it to run on its own?

How much time do you have to devote to finding developers and conducting necessary due research before inviting them to join your team? How probable is it that you’ll need the same team to work on the project again in the future for additions, adjustments, and maintenance? Is a long-term working connection a valuable asset that can be counted on in the future?

What is your projected hiring budget for the following 12 to 18 months of the project?

To determine whether a ReactJS developer is “worth their salt,” they must be well-versed in the following technologies.

  • Websockets
  • Ajax 
  • SOAP 
  • XSLT J
  • SON
  • Canvas
  • Bootstrap\sAngularJS
  • SocketIO\sBackbone
  • Angular2
  • Bower
  • Webpack
  • Browersify
  • Gulp\sGrunt
  • WordPres
  • Apache\sNginx
  • OpenStack
  • Elasticsearch
  • Confluence
  • Redis
  • MongoDB
  • NoSQL
  • MySQL
  • PostgressSQL
  • Blockchain
  • JQuery\sMomentJS\sLodash
Cloud Computing Services
  • Npm
  • AWS (Amazon Web Services)
  • Azure is a service provided by Microsoft.
  • SaaS
  • Github
  • Selenium
  • Mocha
  • TDD
  • Unit-tests
  • Karma
  • Enzyme

In 2021, why is Reactjs for SaaS the next big thing?

ReactJS developer skills are required.

1. Recruit a Reactjs developer

This is crucial at this point. Whether you choose a freelance ReactJS developer or a ReactJS development service, they must possess the following abilities. Furthermore, the abilities are separated into two groups:

Hard-to-find abilities are necessary-

It goes without saying that a ReactJS developer should be well-versed in JavaScript. Understanding the flow and architecture of diverse apps requires an understanding of JavaScript.

Before you hire a developer, you need to know if they can write clean code. Concise codes are essential because they are used in the design and development of the app.

They should be able to work with ES6, HTML, and CSS. They should also be familiar with Github, unit testing, and other CI/CD and DevOps tools.

A thorough understanding of the ReactJs concept is required. Furthermore, mastery of several frameworks, libraries, and tools would be advantageous.

Soft abilities are essential-

ReactJS developers must be able to collaborate in a group setting. Because it involves several areas of software delivery, it necessitates meticulous preparation.

They must be open to constructive criticism and have a constant drive to learn new tools.

A ‘go-getter’ is required of the ReactJS developer. They should collect all relevant data and guarantee that the final product is customer-focused. It is critical since it aids in the conservation of funds and resources.

Upscale problem-solving abilities will be a plus. Now you must decide whether to engage a freelance ReactJS developer or a ReactJS development organization.

When should you hire a ReactJS developer on a freelance basis?

Hire a ReactJS developer on a contract basis

Hiring a freelance ReactJS developer is contingent on a variety of factors. You must clarify everything before hiring a freelance developer, whether it is the intricacy of your project or the money. Here are a few things to think about.

If you’ve worked with freelancers before and are confident in your abilities, hire a freelance developer.

As previously stated, hiring a freelance ReactJS developer is a fantastic idea if your project has a restricted scope and requires only minor bug fixes.

The majority of freelancers work from remote locations. As a result, freelancing is a wonderful option if you don’t mind scheduling meetings with folks from different time zones.

Employing freelancing ReactJS engineers has a number of benefits.

There are a number of advantages to hiring freelancing ReactJS engineers for your company. 

They are as follows-

You must only pay for the hours that the freelancers spent on your project. Furthermore, you are not liable for providing them with a workplace or compensating them for their vacation time.

Business companies will have an easier time finding a skilled developer within their budget.

Choosing freelance developers provides you access to a wide pool of talent all over the world.

1. Employing freelance ReactJS engineers has a number of drawbacks-

Business companies, on the other hand, encounter several obstacles when hiring a freelance 

ReactJs developer. They are as follows:

There’s a good likelihood that freelancers will falsify their CVs in order to land a job. As a result, it is critical for recruiting managers to do a thorough investigation on their technical abilities. You should not proceed without first checking their technical credentials.

Because freelancers work from faraway locations, there’s a slim chance they’ll be in your time zone. This could cause havoc in terms of managing and cooperating with them.

Believe it or not, maintaining a high level of motivation among freelancers becomes challenging during the project. Self-motivated freelancers are hard to come by. As a result, there’s a chance your project will be delayed.

2. Considering hiring a Reactjs developer? Take a look at these things first.

When should you consider hiring a ReactJS development company?

Employ the services of a react js development firm.

Hiring a ReactJS development agency is a preferable option if you have a long-term project that requires significant labor. Furthermore, the agency will have all of the necessary resources under one roof, simplifying the communication process.

You’ll have access to the best minds if you work with an agency. The specialists will not only assist you in validating your idea, but they will also make suggestions for how to improve the product.

An agency can be a dependable development partner because they handle the management process as well.

If your project necessitates several specific developments, you should hire a ReactJS development service.

3. The Benefits of Hiring a ReactJS Development Company

There are numerous reasons why a ReactJS Development Company is the best option for ReactJS development. We’ve included a few below for your convenience.

You won’t have to worry about the delivery procedure if you work with a seasoned development firm. Because they deal with a variety of clients on a regular basis, these companies use a streamlined method.

They work in accordance with the client’s specifications. For example, if you need your job completed soon, the agencies will assign a dedicated team to it. Furthermore, with an agency, you always receive a scalable ReactJS development team with an agency.

In the agency, the onboarding process takes time. Even so, you can save a lot of time because an agency will only provide you with an experienced workforce.

A ReactJS development agency’s technological competence is second to none. As a result, it will assist you in developing sturdy and scalable goods while also keeping you ahead of your competitors.

4. Using a ReactJS development agency has certain drawbacks.

Now it’s time to consider the challenges that a corporation may experience when hiring a ReactJS development firm.

The most basic requirement for developing a decent website or app is consistent and proper communication. If there is a breakdown in communication, the entire project can go off the rails. If there is even a speck of confusion, the product’s intended goal will not be met.

It’s possible that the agency will charge you more than a freelancer in some cases. As a result, before choosing a ReactJS development company, you should consider the scope of your project.

If you choose an offshore development company, time differences may be an issue. Although in today’s interconnected globe, agencies work 24 hours a day, seven days a week in today’s interconnected globe, time differences are easily overcome.

Before starting the development process, make sure the development agency understands your requirements. Because a thorough understanding of the product improves its performance.

How much does it cost to employ ReactJS developers?

How much does it cost to hire a ReactJS developer?

An intriguing fact: if you want to recruit ReactJS engineers from the local market, expect to pay a lot of money. To help you avoid this, we’ve compiled a cost estimate for hiring ReactJS engineers that take into account all factors.

The price range varies depending on whether you hire freelance ReactJS developers or hire a ReactJS development company.

How much does it cost to engage a ReactJS development Company?

  • $65-$70 in the United States
  • $40-$45 in Australia
  • $22-$27 in Eastern Europe
  • $37-$42 in Western Europe
  • $20-$25 in India
  • How much does it cost to employ a freelance ReactJS developer?
  • $47-$50/hour in Asia
  • $65-$72/hour in the United States
  • $68-$72/hour in Australia
  • $55-$65/hour in Europe


We are a group of highly skilled developers, testers, and business consultants who try to provide only the best results. Do you want to create a React app that is entirely secure and efficient? ‘Hire ReactJS Developers’ is a phrase that means ‘hire ReactJS Developers.’

Where to host React JS applications?

VCCLHosting is offering shared hosting with CPanel where you can host your project easily. VCCLHosting is a parent company of VCCLCloud and the plans start at less than a dollar a month. You can check the plans from the below link


There’s a potential that employing a ReactJS developer will take you all over the world. Finding a ReactJS developer could be difficult due to their high demand and popularity. It aids in the creation of speedy and scalable apps because it is built on the JavaScript library.

Before hiring ReactJS engineers, you must first establish your goals and desires as a business. Clear thinking will assist you in selecting the top candidates from your skill pool.

Related Blogs

Best 9 tips to optimize/improve page speed using inbuilt features of server

Improve Page Speed

Page speed basically means how fast a page loads. It isn’t measured based on on-site load. These two things are very different. Site speed is how fast the page opens on the web while page speed is how fast the contents of the page load. Page load speed affects the interest of the customer on your website. In this blog, we are going to see best ways to improve page speed using features available in our server. A study shows that if the page speed is less than 1 second then the bounce rate (customer leaving the website) is 7% reduction in yearly revenue. You can imagine it with the example of Amazon. 1-sec delay can cost Amazon 1.6billion sale reduction. So the faster the page load speed, the more the customer is happy and that reflects in more the conversion rate. And it ultimately reflects in revenue.

Nowadays Google has started to make a ranking list based on the page load speed. Which site has more page load speed appears at the top. The below image shows the research results of bounce rates.

improve page speed

So, if the page load speed is more then the customer conversion will be less. So it is inversely proportional to each other.

How page load speed is measured

Google has defined three metrics as Core Web Vitals as page speed measurements.
1) LCP(Largest Contentful Paint )- It measures loading performance
2) FID(First Input Delay)- Measures interactivity
3) CLS(Cumulative Layout Shift)- Measures visual page stability

Now it becomes very vital to understand how can we increase the page speed as it directly affects the business revenue. Below are some methods you can use for the user experience.

How to improve page speed

To improve page speed you need to work on various factors, below we are suggesting some methods to improve page speed of your website which is already existing in your server.

1. Use a better host for your website

Below are the three possible hosting types- There are three possible types of hosting:

i) Shared hosting: Shared hosting is the cheapest way and less time consuming to implement and have a good page speed. You share CPU, RAM, Disk space with other websites. It’s definitely cost-effective but it’s not as fast as VPS or dedicated servers. It’s mainly because sharing the server can get overloaded and it strains your page loading time. It’s suitable for small businesses.

ii) Virtual Private Servers (VPS hosting): It comes with a dedicated RAM, virtual CPU which only you have access to. It gives you a specific set of assets so that you have full control of them. It provides great speed.

iii) Dedicated server: It’s the most expensive way. In this case, you own your own physical server. It’s faster than VPS. Another solution will be to rent dedicated cloud resources from Microsoft Azure or AWS. Here you will be getting a dedicated server so only you will have access and full control of it. It can be called a “Hybrid Cloud” option. It also gives you benefits such as flexibility, security, high performance and total control.

2) Use a CDN (Content Delivery Network):

When a user experiences a delay in page loading, it is mainly due to the physical distance between the end-user and the host. The more the distance, the more the delay. CDN is a network built with multiple cache servers at a different location, known as Points Of Presence (POPs). This helps to reduce the distance and gives a better User experience.

improve page speed

There are other solutions for page speed which does not include server choice. Let’s discuss more them below

3) Reduce Redirections:

Too many redirects can make the page load slower. Sometimes redirects are necessary when you are moving from one domain to another. But if unnecessary redirects are avoided or the Top-Level domain is resolved to max one then it increases the page speed significantly.

4) Keep the images in optimized data size:

We all know how images play a significant role in website user experience. Especially for e-commerce websites. But having large size images may slow down the webpage experience. So instead of reducing the number of images and image quality, you can just reduce the image size.

5) Enable Website caching:

If there are a lot of users accessing the page at the same time, the servers work slowly. It needs more time to load the web page to each user. Caching enables the storing of your current version of the website and presenting it until it’s updated. This means that the web page doesn’t render repeatedly for each user. Due to this website doesn’t need to create requests each time for databases.

6) Minify JavaScript and CSS files:

If your website uses more javascript then it leads a user to identify as an individual HTTP request. Which ultimately slows down your page loading time. So try to group the CSS files and Javascript into one so that it will reduce the HTTP requests and will increase your page speed.

Some other important effective ways to improve pagespeed

1) Compressing Images

Images are most common contents on webpage for download. Compressing images helps to save bytes of disk and improve the performance. To find optimal image format and compressing strategy many analysis aspects need to be observe like, encoded data, format of image, quality and image resolution. GIF and PNG are most common and popular formats in compression activity. For motionless image PNG gives best compression format and quality. For video and animated pictures GIF format is suitable.

2) Cache Expire Policy

Webpage loading time is influenced by activity to save and use files repeatedly. Whenever user revisit the cache helps to reduce loading time. Browser caching technique helps to properly download CSS, HTML and JavaScript code. If  you see Cache Expire header is crashed,

You can fix through wordpress by adding cache control and headers. Use follwing code with Nginx and add in configuration file of server.

If you use Apache Server use following coding in .htaccess file.

< filesMatch “.(ico|pdf|flv|jpg|jpeg|png|gif|svg|js|css|swf)$”>
Header set Cache-Control “max-age=75600, public”

Here cache will expire after 75600 sec.

Add Expire Session in Nginx in Server block

location ~* .(jpg|jpeg|gif|png|svg)$ {
expires 90d;
location ~* .(pdf|css|html|js|swf)$ {
expires 3d;

Add Expire Session in Nginx in Server block

location ~* .(jpg|jpeg|gif|png|svg)$ {
expires 90d;
location ~* .(pdf|css|html|js|swf)$ {
expires 3d;

Add Expire in .htaccess file of Apache (Add it in header section)

ExpiresActive On ExpiresByType image/jpg “access 6 months” ExpiresByType image/jpeg “access 6 months ” ExpiresByType image/gif “access 6 months ” ExpiresByType image/png “access 6 months ” ExpiresByType image/svg “access 3 months ” ExpiresByType text/css “access 2 months ” ExpiresByType application/pdf “access 2 month” ExpiresByType application/javascript “access 2 month” ExpiresByType application/x-javascript “access 2 month” ExpiresByType application/x-shockwave-flash “access 2 month” ExpiresByType image/x-icon “access 7 months ” ExpiresDefault “access 5 days”

3. Adding AMP or mobile friendly pages

 Accelerated Mobile Pages (AMP) is an open source technique to increase website speed on mobile. AMP pages are lightweight to accelerate SEO impact. Billions of AMP pages are working and running with high performance and engagement. It gives flexible result in webpage speed, search ranking and interne marketing.


Now we know that how much page load speed can affect the business. So it becomes very important to improve the loading speed. The most important factor the improve the page speed is server configuration. Another factor impact is not that crucial. So it’s very important to take the server configuration into account. The more the space, dedicated access, and other assets the more the page speed is. Keep the below points in mind while applying the effective solution

Conversion- customer conversion rate

Usability- How responsive is your website to a customer request

Visibility – How fast it loads

These three factors play important role in website ranking.

Difference between Web Server and Application Server

Difference between Web Server and Application Server

Difference between Web Server and Application Server

Web server and Application server are two terms that are used in the same context but still have their own differences, understanding these differences may help you to use these technologies in your favor. In this post, we will see the main difference between Web Server and Application Server with examples.

Table Of Contents

What is a Web server ?


Before knowing the differences between Web Server and Application Server, lets know about the definitions and use of both servers.

Difference between Web Server and Application Server

A web page is a collection of raw material ranging from images to text files to database context. End users sitting out on a computer somewhere on the internet a web server is a piece of software that runs on the same computer. When you ask for the web page the web server put all those raw material together into a web page and then sent it back out over the internet to your web browser.

Common examples of web server software are Apache and NGINX. Web servers are all about dealing with the HTTP content or content which can be handled over the HTTP protocol. . In a web server system, it stores, process, es and deploys web pages to customer. A customer is either a web browser or a device app. A web server can serve content like pictures, videos, text, and font size.



1. Microsoft IIS-


It is an Internet Information Service platform for web servers, which gives packages for windows-based servers. It specially used to manage to host content on the web page. It also gives GUI to manage websites and user accounts.

2. Eclipse Jetty


Eclipse Jetty delivers web server and container packages and supports HTTP/2 and other integrations like JMX, OSGi, WbSocket, and many more. This software are open source and available free for enterprise use. Jetty is embeddable and asynchronous with cloud computing platforms like Google AppEngine and SaaS like Yahoo. The latest version of Jetty is Jetty 11.0.x, Servlet 5.0 and Java 11+.

What is Application server ?



Application Server Working
Working Process of Application Server

Application servers are specifically designed to run applications by the combination of both hardware and software.  It provides an environment for programs to run. An application server is a server that allows both the creation of web applications and running a business logic that is needed to build and run dynamic content, transaction results, decision support, or real-time analytics. So basically an application server provides the business logic for clients. The application server has its own dynamic features and can be used to create and run dynamic modules. It is a software platform that deploys applications including mobile apps, web, and browser-based applications.

The successful business logic can be implemented using application servers. This business logic causes dynamic changes in data and enables the productivity of applications like transactional activity, decision support app, and real-time scenario analysis. Client-Server communication is the foundation of the Application Server and it includes transaction process, secure network, and concurrency control.

Difference between Web server and Application server ?



Let’s understand the difference between the web server and application server by examples, suppose I have a file ‘script.js’ this file contains a javascript programme, which can be executed and a result can be generated. Now suppose I served this file to my client through a web server, the client will receive only the contents of the file, the javascript won’t be executed.  

But in case of a application server, client  want to serve the ‘script.js ‘ file and wish to execute that file using programming environment.  A Web Server will send the HTML as output for all requests sent to the server.  It does not have any backend logic. So that is the fundamental difference between the a web server and an application server. 

While an application server can do the task which a web server can do too, but webserver can’t do the tasks of an application server.  Yes, there are some plug-ins for a web server that can help a web server to act as an application server to some extent but the efficiency and functionality of an application server can’t be achieved by a web server.

Examples of Application Server:


These examples will help you to understand the difference between Web server and Application server

1. Nginx



It is a web server with open source technology, with load balancing and proxy for mail capacity. As per the study of Netcraft, Nginx can provide service and manages the load of 38% of global websites and 25% engaged sites till December 2019. Nginx used by multiple well-known companies like Netflix, Zynga, and Dropbox.

2. Glassfish



It is a famous open-source application server served on the JAVA platform and developed by Sun Microsystems. The extension of it is now managed by Eclipse Foundation. Glassfish platform reinforces JavaBeans,  Servlets, and many more.

3. WebLogic


It is Oracle’s product of application server to deploy apps in distributed manner using JAVA EE technology. It is fully meshed with Oracle’s platform and cloud services.

3. Apache Tomcat Server



Apache Server is a globally used open-source technology of web-based server runs on Java Servlets. It is used to render and deploy web pages with JAVA code and Java EE (Java Enterprise Edition). Its high-availability Java application server for servlets, JSPs, and WebSockets.

Difference between Web Server and Application Server



Application Server Web Server
Able to deploy dynamic data. Able to deploy static data.
Multiple protocols used like HTTP to develop business logic. Only HTTP protocol is used for communication.
Able to serve websites and business applications Only support website based applications.
Multithreading technology is used to serve multiple clients requests. Do not serve multithreading.
Smoothly running complex processes with resource management. Good for less resource management in web traffic.
Application Database is use to perform connection with backend. Static database is use to connect with backend.

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What is Virtualization? What are the benefits of using Virtualization?

What is Virtualization

What is Virtualization?

Suppose there is a number of applications to be performed to run your business and eventually it will require the same number of servers i.e. one server for one application. This is the simplest strategy one can consider while designing IT infrastructure, but it will be costliest that is it will increase the operating cost of business also It will not utilize available recourses properly.

The solution to this problem is virtualization. If you are the guy from the technology industry then you must have been heard about multiplexing. It’s simply nothing but sharing single communication media between multiple users. You can apply the same analogy to virtualization, here physical hardware is shared among the various operating system or applications and gives them a look of an independent entity.

What is Virtualization – Explained

The main component which separates the single physical hardware among various virtual machines is called a hypervisor.it is a type of operating system and software, which operates on physical hardware. It dynamically allocates available physical resources to virtual machines to be created.

What are the benefits of using Virtualization?

There are multiple advantages of a virtualization, out of which important ones are

  1. Infrastructure cost reduced to a great extent
  2. Energy efficient
  3. Enhance the productivity of the system
  4. Enable remote login

What are types of Virtualization?

The concept of Virtualization can be further extended to Server, Application, Memory, Storage and networking virtualization.

1. Server Virtualization

The most common type which generally considered virtualization is server virtualization. It is nothing but running multiple operating systems on a single physical hardware and most important is they are running independently. As the resources are shared among different OS the proper utilization of resources takes place. Each separate O.S. is also pronounced as guests, instances, or containers.

2. Desktop Virtualization

In this type of virtualization, multiple user desktop instances are created on a single host. Users are having the facility to access these desktop instances remotely. The best example of desktop virtualization is N-computing.

3. Application Virtualization

Here the application to be virtualized is installed on a host and can be used by multiple number of users remotely. The WINE is the example of software which is used for application virtualization. It allows UNIX based operating systems to run Microsoft Windows based software directly on host. With the help of application virtualization, the application data is synchronized with main server and can available anytime to the user.

4. Application Virtualization

It is nothing but pool of different physical storage units. It is managed by a software generally by hypervisor. it provides scalability, redundancy, improved performance. Due to storage virtualization the problem of limited storage can be resolved because one can add memory quickly into a pool. The storage virtualization can be further classified as

Block Virtualization

File Virtualization

5. Network Virtualization

It combines number of physical networks into a virtual single network or vice-versa. This new virtual network is software managed network.

The best example of network virtualization is to create virtual LAN. It is logical to a group of computers. They are appearing to be on the same LAN but they are virtually created. The advantage of network virtualization is that the network admin can automate the networking task and no need to control it manually. Also, it is very easy to scale the network according to requirements. Some of the advantages of network virtualization are

  1. It reduces the cost of hardware purchase
  2. Faster application delivery
  3. Improved security
  4. Centralized control
  5. Scalable network

What is Hypervisor? What are the types of Hypervisor?

It is software that is responsible to create and control virtual machines. Currently, there is a number of hypervisors which are available in the market, some of the famous examples are, Oracle Virtual Box (Apple, Linux, Microsoft), Microsoft Virtual PC 2007 (Microsoft), Parallels (Apple), Microsoft Hyper–V (Microsoft), VMware (Apple, Linux, Microsoft), Citrix (Apple, Linux, Microsoft), Linux VServer (Linux).

What are the types of Hypervisor?

Hypervisors are mainly categorized according to their placement into the system. Generally, there are two types of hypervisors are there which are

Types of Hypervisor
Types of Hypervisor

Type 1 (native) hypervisor:

In this type of hypervisor, then it is installed directly onto hardware without being managed by the operating system into the middle. They are also known as bare-metal types of hypervisors. As it is having direct access to the hardware is faster than the next type of hypervisor that we will be going to discuss soon. It’s more secure and scalable too.

VMware ESX and ESXi, Microsoft Hyper-V, Citrix XenServer, Oracle VM are some examples of type 1 hypervisor.

Type 2 (hosted) hypervisor:

here the hypervisor is not installed directly onto hardware rather there is an operating system between hardware and hypervisor which controls the hypervisor. it uses the O.S. virtualization technique. As the operating system controls the hypervisor that’s why it is somewhat slower than type1 hypervisors. Scalability is also somewhat limited as compared with the previous type. It is less secure too.

VMware Workstation/Fusion/Player, VMware Server, Microsoft Virtual PC are some examples of type 1 hypervisor.

KVM As a Hypervisor

Kernel-based Virtual Machine is the Linux-based type-1 hypervisor. It supports native virtualization on the processor. Technically speaking it’s not a perfect type 1 neither type2, it’s somewhat middle between them. some of the key benefits are consist of loadable kernel modules.

  1. It is very secure due to SELinux and sVirt library.
  2. Gives near-native performance.
  3. KVM is also full virtualization technology thus no modification is required into the guest operating system.
  4. It also supports memory virtualization capabilities therefore all types of memory access mechanisms are supported
  5. Most of all It is open source and thus free to use

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cPanel installation – Step by step guide

cPanel Installation Guide Step by Step

How to install cPanel – Step by step guide

 What is cPanel actually?

If you are a trained network engineer or website builder then it becomes very easy to control server or websites, but if you are the one who is not having any prior technical knowledge then it becomes cumbersome to manage your server /website.

To simplify this difficulty here comes cPanel in the picture. Simply speaking it’s a linux based application which provides graphical user interface to control server /website. It can be handled by anyone with little training.

cPanel is the most widely used and most trusted control panel which is used to control web servers. It is a paid software which was developed by cPanel LLC, a U.S. based software company. Mostly cPanel is provided along with hosting account by hosting service providers with their special hosting plans.

cPanel is simple to use, regular updates are available to improve the performance, also security provided is best in class. cPanel is mostly used by administrators, resellers, and end-user website owners to control the various aspects of website and server administration through a standard web browser.


How cPanel looks like?

cPanel has two parts

    WHM panel (server management interface)
  • Create cPanel account for customer 
  • Monitor and protect your server
  • Transfer and backup data in few clicks
    cPanel(user interface)
  • Create website and domain in few clicks 
  • Launch and manage email networks
  • Manage and store web files

What cPanel do for us?

 With cPanel we can do about everything which is required to run hosting account or in broader sense website properly. Some of the key functions are

  • Connect domain names 
  • WordPress installation
  • Upload files to server
  • Manage security setting 
  • Create new database
  • E-mail setup
  • Taking back-ups 
  • Install additional add-on packages
    cPanel(user interface)
  • Create website and domain in few clicks 
  • Launch and manage email networks
  • Manage and store web files

cPanel Installation requirements

    cPanel is installed on hosting server, therefore to install cPanel, few things are must which are 
  • You should have valid hosting plan which comes with main IP and root password.  
  • Server with valid operating system having
    o minimum 2 GB RAM
    o Minimum 40GB Disk space
  • You should have firewall disabled on O.S.
  • You should have active internet connection for ssh (secure shell) session typically for secured command line access for remotemachine.

cPanel Installation step by step guide

let us dive deep into whole process of cPanel installation.

    1. Login to remote server via ssh protocol
    2. If you are on windows and want to login ssh console then you should require PuTTY which is free and open third-partysource terminal emulator to utilize SSH. So just install it and open PuTTY, the window will appear like

      Type the host name which is main IP given by your hosting provider, select port 22 which is by default port for SSH. select connection type as SSH as we are going to login for secure shell connection.

      If you are linux / mac user then they are having native SSH client built into command line. Therefore, open Terminal and type command

      MacBook-Air:$ sshroot@hostname

      Hostname maybe your main IP address given by hosting provider. After executing this command if you are creating SSH session first time then message will appear like this

      Type “yes” to continue.

      Then terminal will ask for root password which was given to you by your hosting provider. Enter correct password, one thing is very strange here that is when you type password it won’t be shown on your display for security reasons. After correct password you will be now successfully logged in into your remote server via ssh.

    3. For some editing purpose you will be requiring text editor. Here in this tutorial we are going to install “nano” text editor which is pretty much common and popular text editor. For this enter following command into terminal window 
    4. MacBook-Air: $ yum install nano

      Then terminal will ask you some permissions, allow that by pressing Yes(Y) and nano will be get installed onto your remote server. 

    5. The next step is to check whether Perl is available onto your server or not. Just check it by typing following command into terminal window
    6. MacBook-Air: $ perl -v

      If it already installed then version number will be displayed otherwise it will show error. In this case you must install it by entering following command into terminal window

      MacBook-Air: $ yum install perl

    7. cPanel installation can be done with auto installer script which will install packages in few clicks. for this we must install curl
    8. MacBook-Air: $ yum install curl

    9. now we are ready to install cPanel & WHM utility onto our server. Just type following command into terminal window
    10. cd /home && curl -o latest -L
      https://securedownloads.cpanel.net/latest &&sh latest

    11. It will take about 40 minutes to install cPanel and WHM onto your remote server. successful installation message will be shown onto the terminal window .

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