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Question
Why is HTTP called a "stateless" protocol?
Answer
Each HTTP request is independent and self-contained, so the server keeps no memory of previous requests.
After sending a response, the server has no memory of the client. Each request-response cycle is complete in itself. This means the server can't naturally track:
- Which user is making requests
- What they did in previous requests
- Shopping cart contents, login status, etc.
Cookies and sessions were invented to work around this limitation.
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