LibraryWhat Is A Cookie
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Networking & Protocols

What is a cookie

Cookies are small text files stored on a user's machine by a web browser, enabling websites to maintain state across multiple requests. They are a core mechanism for session management, personalization, and tracking, but introduce security and performance considerations.

HTTP protocolSet-Cookie headerCookie headerSession cookiesPersistent cookiesXSS vulnerabilityHttpOnly flagSecure flagSameSite cookiesLocal storage

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What is a cookie - System Design Diagram

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