How Does Web Server Work?

Ever wondered what happens behind the scenes when you type a website URL and hit enter? That’s where web servers come in — the unsung heroes delivering websites to your screen in milliseconds. From handling requests to serving files, web servers are the backbone of every online experience.How Does a Web Server Work?

A web server is based on the client-server model. A web server delivers web content to a client upon request. To better understand this interaction, check out the difference between a web server and web client. In this model, the client requests information from the server and then the server then responds by sending the requested information.

Say for example, when you want to download a file from a website, your web browser (Chrome or Firefox) sends a request to the server hosting the site. 

You type the URL of the website, and the browser uses HTTP to ask the server for the file. The server receives the request, locates the file, and sends it back to your browser using HTTP.

Following are the steps to make your understanding easier. 

1. Receiving the Request: When a web browser (like Chrome or Safari) queries a web server, the request reaches the server through the Internet. 
2. Processing the Request: The server then translates the domain name into an IP address using DNS. Further, locate the requested resource, such as an HTML page or script.  
3. Retrieving the Resource: If the requested file exists, the server fetches it. If not, users encounter errors like Error 404 (File Not Found) or Error 401 (Unauthorized Access).  
4. Sending the Response: In the final step, the server sends the requested resource back to the browser using HTTP or HTTPS. The client browser then displays the retrieved data. 

While a web server processes and delivers web content, a web browser retrieves and displays it for users. Learn more about the difference between web browser and web server and how they work together.

Read more to discover how web servers work step-by-step.