nonpersistent

Nonpersistent (often spelled non-persistent) is a term used in computing to describe systems, data, or configurations that do not retain changes or state after a session ends. In this sense, any work, settings, or files created during use are not preserved unless they are explicitly saved to a persistent storage location.

In virtualization and desktop delivery, non-persistent desktops are virtual desktops that revert to a baseline image after the user logs off. Changes made during a session are discarded, while a separate layer or profile store can be used to preserve user settings or application data if required. This approach is common in shared computing labs, classrooms, and environments that require rapid reset and standardization.

In web technologies, non-persistent or session cookies are cookies that exist only for the duration of a browser session and are deleted when the browser is closed. They contrast with persistent cookies, which remain on the device until a defined expiration date. Non-persistent cookies are commonly used for session management and security-related purposes.

Non-persistent data generally refers to information that is not stored permanently. Ephemeral storage, caches, and scratch space fall into this category, as they are intended to improve performance or provide temporary space and are cleared or overwritten over time or after power loss.

Overall, nonpersistent designs emphasize temporary state, rapid reset, and reduced long-term data retention. They can improve privacy and security and simplify maintenance, but may require extra mechanisms to preserve essential configurations or data when needed.