Skip to main content

How web applications loads?

Ever imagined how a webpage is loading when we just enter that site name. Here I am gonna tell you how that works actually. Let's take an example website say 'www.abcd.com', here "abcd" is called the domain name. 

We will be having a system called 'Domain name System' which helps to translate domain names to IP addresses.

So, first, when we type a website in our browser, our browser sends the request to the DNS server, and the DNS server gives the IP address of that website to our browser, now that IP address points to the respective server and gathers all required files for website loading and again it gives to the browser and at last, the browser will display us the webpage.




In the above picture as we can see a website name 'www.abcd.com'. The following steps were done to load the webpage.

  1. User searches for 'www.abcd.com' in the web browser.
  2. The browser sends the website name to the 'DNS server' and requests it to give the IP address of the website.
  3. The DNS server gives the IP address to the browser.
  4. Now that IP address points to that particular server.
  5. All required files for loading the webpage will be sent to the browser from the server.
  6. Finally website will be displayed.


Feel free to comment and Thank you for reading my blog :)

Labels:

Comments

  1. Aravindan SrinivasanApril 10, 2022 at 7:44 AM

    It's good contents are clear

    ReplyDelete
  2. srijaApril 10, 2022 at 7:47 AM

    Your explanation is good and taking an example along with image is really a fabulous Idea 👍👏👏

    ReplyDelete
  3. UnknownApril 10, 2022 at 8:02 AM

    Very good Clearly explained ..Keep it up 👍👌

    ReplyDelete
  4. AnonymousSeptember 13, 2022 at 12:17 AM

    👍👌

    ReplyDelete

Post a Comment

Popular posts from this blog

How DNS server works internally?

  DNS-Domain Name System is a system that translates website names to IP addresses.   As you can see in the above picture we have taken a website "www.rahulsai.com" so now the following steps will describe how DNS works internally. 1. We will enter a website in our web browser, here we took "www.rahulsai.com" 2. Now this website will go to the ISP(Internet Service Provider) from ISP it will go to the DNS resolver. Here the resolver will be operated by the ISP. So now this will start looking at the website name in its local cache if it is found then it will return to the web browser. 3. If the website is not found in the local cache then the resolver sends the request to the "ROOT SERVER". The root server will be checking the TLD(Top Level Domain) of the website. Note1: There are a total of 13 root servers across the globe. Note2: TLD-Top level Domain are .com, .dev, .org, etc which come after the domain name and are known as TLD. For ex: www....
3 comments
Read more

Working of VPN

VPN also known as a Virtual Private Network, this is used to establish a secure connection over the internet. By using the VPN we can surf over the web anonymously and our data will travel in encrypted form so that our data is not intercepted by other people. Why we use a VPN? Let us consider a situation, you are somewhere in a public place and you are connected to public Wi-Fi, Imagine you are entering a website and you want to enter sensitive data like your username and password, If any hacker connected to that public Wi-Fi then he can intercept all data what you are entering since you and the hacker are connected to the same Wi-Fi. So here if we use a VPN, our connection becomes private and the hacker will not be able to get our data since it will be in the encrypted form. How does a VPN work? Usually, the working flow of connecting to a web application is: In the browser we will enter the domain name --- Using the DNS this domain name converts into an IP address --- It goes to ISP ...
3 comments
Read more