Session

You might say

After signing in, why does the page stay signed in after refresh?

State the server keeps for one person's continuous use, recognizing them by an identifier in a cookieRemaining logged in after a page refresh happens because the browser automatically attaches a session cookie to every request, allowing the server to recognize the authenticated user. Once a session expires or gets cleared, the user must log in again—a lifecycle boundary rather than an authentication error.

Know first

Authentication

Session

From sign-in to expiry: how a session recognizes the same person

From sign-in to expiry: how a session recognizes the same personEnter credentials

credentialsverified

servercreates session_7

browserstores the identifier

EvidenceThe server creates session state for this person

After sign-in, the server starts keeping state for this person.

What a session goes through

The server creates a session at sign-in: After credentials pass, the server creates a session state for this person and gives the browser an identifier.

Every request carries the identifier: Later requests automatically carry it; the server recognizes this is the same person.

It fails after expiry or clearing: When the session expires or the identifier is cleared, the server no longer recognizes it and the page asks for sign-in.

Quick checkChoose the best answer

A user reports being asked to sign in again every half hour. What is the most likely cause?

The user mistyped the password, so authentication fails each timeThe database is down, so all operations failThe session lifetime is too short, so the identifier stops being accepted

You can say this to an AI Agent

Users are asked to sign in again every half hour. Check the session lifetime setting and state its current value; if it is too short, adjust it to a reasonable duration and confirm an hour of continuous use stays signed in.

Learn next

1Authentication→2Cookie→3OAuth→

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