what is rand?

[Amelyan]

Often, I see something called "rand" or ".rand" or "rnd" in url query
parameter, for example in yahoo mail url. E.g.

http://someurl.com/a.aspx?id=123&rand=91g3obstudb1r

or http://someurl.com/a.aspx?Rnd=1.2341123

What is it used for?

Thanks

 

[Shimon Sim]

Looks like some random string to avoid caching on browser.
I don't think it is something standard.

 

[Guest]

Anything that is in the querystring is just some variable or other than the
web developer is using for some purpose specific to the site they have
developed.

 

[Kevin Spencer]

Could be a reference to Ayn Rand?

--
;-),

Kevin Spencer
Microsoft MVP
Professional Numbskull

Show me your certification without works,
and I'll show my certification
*by* my works.