SESSION.CFID unique?

[dongzky]

Hi All,

I am not too sure about this. But is SESSION.CFID a unique value? Or is it possible that the value of today's session will be the same value generated in future sessions?

[mack_]

CFID and CFTOKEN are used together to uniquely identify the user.

However CFID's are sequential so I can see a scenario where 2 sessions

will have the same CFID: if the last value of the CFID is not saved

properly (for example following a CF server crash) new clients will

reuse some of the CFID's. The actual chances of this happening are

pretty slim though.

Mack

[TLC-IT]

It appears to me, from http://livedocs.adobe.com/coldfusion/8/htmldocs/help.html?content=sharedVars_13.html that the most appropriate strategy would be to use Session.SessionID.  It seems to me, based upon this reading, that "the designer's intent" was that this would be a unique-identifier string that will reliably work in all cases, i.e. whether Session or J2EE persistence methods are used.