Since session and cookies are both used to store temporary data, what is the

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Asked: May 17, 20262026-05-17T01:34:55+00:00 2026-05-17T01:34:55+00:00

Since session and cookies are both used to store temporary data, what is the difference between them?

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Editorial Team · Answer 1 · 2026-05-17T01:34:56+00:00

In each HTTP response, the server has the opportunity to add a header Set-Cookie: {cookie-name}={cookie-data}; {cookie-options}.

The browser will, in every subsequent HTTP request (or as specified by the options), add a header Cookie: {cookie-name}={cookie-data}.

Request #1:

POST /auth/login HTTP/1.1
Host: www.example.com

username=Justice&password=pass1234

Response #1:

HTTP/1.1 307 Temporary Redirect
Set-Cookie: user_id=928
Location: http://www.example.com/dashboard

Request #2:

GET /dashboard HTTP/1.1
Host: www.example.com
Cookie: user_id=928

Response #2:

HTTP/1.1 200 OK
Content-Type: text/html

<html>
  <head>...</head>
  <body>...</body>
</html>

All future requests will also include the Cookie header.

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