stateless

adj. lacking citizenship, lacking nationality; having no state

The term stateless can mean more than one thing:A stateless society is another word for anarchy.In law, a stateless person is a person without a state, in other words someone who is not a citizen or subject of any state.The legal and social concept of statelessness applicable to communities of stateless personsIn computer science, stateless refers to a system or protocol which does not keep a persistent state between transactions. See stateless server.In the fiction of Greg Egan, Stateless is a large artificial island that is home to refugees of all nations.Stateless is the title of a motion picture by filmmaker Chris Morrissey that stars latin actor Johnny Diaz Reyes.Stateless is the title of the first album release by singer Lene Lovich.Stateless (band)Stateless is the title of an album which is the collaborative work of the bands Early Day Miners and Unwed Sailor. A film of the same name, by U.S. photographer Chris Bennett is also included on the Enhanced CD.
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Adjective
1. without nationality or citizenship; "stateless persons"
(synonym) homeless
(similar) unsettled

(a.)
Without state or pomp.
  

A stateless server is one which treats each request as an independent transaction, unrelated to any previous request. This simplifies the server design because it does not need to allocate storage to deal with conversations in progress or worry about freeing it if a client dies in mid-transaction. A disadvantage is that it may be necessary to include more information in each request and this extra information will need to be interpreted by the server each time.
An example of a stateless server is a World-Wide Web server. These take in requests (URLs) which completely specify the required document and do not require any context or memory of previous requests.
Contrast this with a traditional FTP server which conducts an interactive session with the user. A request to the server for a file can assume that the user has been authenticated and that the current directory and transfer mode have been set.