in Msdn

(HttpCacheAbility)
Private

Default value. Sets Cache-Control: private to specify that the response
is cacheable only on the client and not by shared (proxy server) caches.



in My project
in (Page_Load)
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60));
Response.Cache.SetCacheability(HttpCacheability.Private);

Cache does not work
may be I must change a some settings in Explorer



and also

The first proccess have a handle of file and write a data in.
can another process can get this handle and use this file during first process use this handle

I think not

Is it true or not ?

But I have Miracle on My machine





Help me please!