sess

Sess is an informal abbreviation for session, used in computing to denote a period of interaction between two endpoints or a data structure that maintains state across multiple requests. In web applications, a session tracks the identity and preferences of a user as they navigate pages. A session is usually identified by a session ID, transmitted to the client via a cookie or URL parameter, with the corresponding data stored on the server or in a token.

In source code, "sess" is a common variable name representing the session object. Typical fields include an identifier (id), a user reference (user_id), timestamps (created_at, expires_at), and a data map for per-session state. Implementation approaches vary: server-side sessions store data on the server and reference it by id; client-side approaches may store minimal state and use tokens (for example, JWTs) to convey authentication and permissions. Hybrid models exist as well.

Lifecycle and security are important considerations. Sessions are created at login or first request, may be renewed, and expire after inactivity or at logout. Security practices include using secure and HttpOnly cookies, rotating session IDs after authentication, and protecting against session fixation and hijacking. Proper session management helps balance usability with protection of user identities and data.

In practice, the meaning of "sess" depends on context and project conventions; it commonly denotes a session object or identifier within code, configuration, or documentation.