Expires:	Last-modified:
Fri, 01 Jan 1999 12:00:00 GMT	Mon, 01 Nov 1999 12:00:00 GMT
PAST	PAST

Expires:	Last-modified:
Mon, 01 Jan 2001 12:00:00 GMT	Mon, 01 Nov 1999 12:00:00 GMT
FUTURE	PAST

Expires:	Last-modified:
not set	Mon, 01 Nov 1999 12:00:00 GMT
-	PAST

This page again.

Results:

First time user
First request during browser session

NOT CACHED YET

Expiration date	Last-Modified	Shall			Is
		always	session	never	always	session	never
past	past	Normal GET			Normal GET
future	past	Normal GET			Normal GET
-	past	Normal GET			Normal GET
-	past	Normal GET			Normal GET

Subsequent request during browser session

Expiration date	Last-Modified	Shall			Is
		always	session	never	always	session	never
past	past	Normal GET (because not cached yet)			Normal GET
future	past	Cache hit			Cache hit
-	past	Cond. GET (200 OK, ASP)	Cache hit		Cond. GET	Cache hit
-	past	Cond. GET (304 N.M., gif)	Cache hit		Cond. GET	Cache hit

---

Revisiting user
First request during browser session

Expiration date	Last-Modified	Shall			Is
		always	session	never	always	session	never
past	past	Cond. GET			Cond. GET
future	past	Cache hit			Cache hit
-	past	Cond. GET		Cache hit	Cond. GET		Cache hit

Subsequent request during browser session

Expiration date	Last-Modified	Shall			Is
		always	session	never	always	session	never
past	past	Cond. GET			Cond. GET
future	past	Cache hit			Cache hit
-	past	Cond. GET	Cache hit		Cond. GET	Cache hit