Why my site's cache is missing?

Google's cache

[Aliceca9]

When I enter "cache:example.org" in google, It shew "Your search - cache:example.org- did not match any documents.", Why?
But when I enter site:example.org in it, It shew many links of my site, I want to know what happend to my site. anyone can tell me? Thanks a lot!

[edited by: tedster at 4:10 pm (utc) on July 26, 2007]
[edit reason] switch to example.org - it can never be owned [/edit]

[g1smd]

Try (adjust for the actual index page name):

cache:example.org/index.html
cache:www.example.org/
cache:www.example.org/index.html

and see if any of those return anything.

[Aliceca9]

When I try through cache:www.example.org.
It shew the result as normal, thanks!

[edited by: Aliceca9 at 7:20 am (utc) on July 27, 2007]

[g1smd]

Always remember that these are all separate URLs, and they could all return different content.

Google may not have indexed the variation that you expected it to.

Read up about setting all the other variants to issue a 301 redirect, redirecting to the canonical URL that you have chosen.