Master raj
3 min readApr 24, 2023

Why Website Use Cookies.. 🍪..🤤

Cookies are a fundamental part of the web and are used for a variety of purposes, such as personalizing content, tracking user behavior, and improving website performance. At their core, cookies are small text files that are stored on a user’s device by a website when the user visits the site.

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The science behind cookies involves several key concepts in web development, including HTTP, stateless communication, and client-side storage. When a user visits a website, their browser sends an HTTP request to the server, which responds with the HTML, CSS, and JavaScript files needed to render the site. By default, HTTP is a stateless protocol, which means that each request from the browser is treated as a separate transaction with no memory of previous interactions.

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🍪 provide a way for websites to maintain stateful communication with users by storing small amounts of data on the user’s device. When a website sets a cookie, it includes a header in the HTTP response that instructs the user’s browser to store the cookie on their device. The next time the user visits the website, their browser sends the cookie back to the server along with the HTTP request, allowing the server to recognize the user and personalize the content or track their behavior.

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In addition to providing a way for websites to maintain stateful communication with users, cookies also play a role in client-side storage. In the past, web developers relied on server-side storage mechanisms like session variables to store user data, which could be resource-intensive and slow down website performance. With client-side storage mechanisms like cookies, developers can store small amounts of data on the user’s device, reducing the load on the server and improving website performance.

However, cookies are not without their drawbacks. They can be used for tracking and profiling users, raising concerns around privacy and security. As a result, web developers must use cookies responsibly and with consideration for user privacy and security concerns, and adhere to local and global privacy regulations.

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Master raj

Certified MERN Stack Developer from Infosys, now sharing expertise on #InCloudByRK. Proficient in MERN Stack, AWS, GCP, Azure DevOps. Let's level up!