Stateless systems or protocols do NOT state as and any prior knowledge (data) does NOT affect the processing of the current data.

Stateless protocol does not require the server to retain sessionData or status about each communications partner for the duration of multiple requests.

In contrast, a stateful protocol which requires keeping of the internal state server-side.

Stateless systems are not dependent on any single instance of the server. This implies a loss of a server has no effect as long as there are more than one instances available.

Stateless systems have no Cache or data Store

More Information#

There might be more information for this subject on one of the following: