Re: Cart ID Duplication
This WebDNA talk-list message is from 2001
It keeps the original formatting.
numero = 36726
interpreted = N
texte = WebMaster wrote: > > Checked this, all these customers have all come directly to our site (IE, > directly typed in the URL), there are no referrer URL at all. > > And the fact that all 15 are using exactly the same ISP, leads me to think > that it has to be a proxy cache server issue. > If this is a proxy cache issue, you can try using the following include file, which is what I had to do to stop AOL from caching my pages (and they have the stupidest cache around!).Call this as [include MIMEHeaders.inc&expires=0] if you want no cache and some other value if you do want it to cache. In addition, we store our cart in a session cookie, which no cache should be able to get at.[!] ------- MIMEHeaders.inc ------- [/!] [!]5:00 is MY offset from UTC - replace with YOUR offset[/!] [!]Also remember to change when daylight savings time takes effect[/!] [math time&show=f]GMToffset={4:00:00}[/math][!] Configure useful variables [/!] [math time&show=f]GMT={[date %X]}+[GMToffset][/math] [math time&show=f]NOW={[date %X]}[/math][!] Check for input variable [/!] [if [expires]=[raw][expires][/raw]] [then] [math show=f]expiresat=3600[/math][/then] [else] [math show=f]expiresat=[expires]*60[/math][/else] [/if][!] Create the GMTexpires variable [/!] [math time&show=f]GMTexpires=[math][GMT]+[expiresat][/math][/math][!] Create the MIMEmodified string [/!] [text]MIMEmodified=[!] [/!][if ([GMT]>[NOW])][!] [/!][then][!] [/!][date format=%a, %d %b][!] [/!][/then][!] [/!][else][!]if GMT after midnight then increment date too [/!][format days_to_date %a, %d %b][math]{[date]}+{00/01/0000}[/math][/format][!] [/!][/else][!] [/!][/if][!] [/!] [date format=%Y] [Format Seconds_To_Time][GMT][/Format][!] [/!] GMT[/text][!] Create the MIMEexpires string [/!] [text]MIMEexpires=[!] [/!][if ([GMT]>[NOW]) and ([GMTexpires]>[GMT]) and ([GMTexpires]<86400)][!] ---- all in the same day ---- [/!][then][!] [/!][date format=%a, %d %b %Y][!] [/!][/then][!] ---- at least one day later ---- [/!][else][!] [/!][format days_to_date %a, %d %b %Y][math]{[date]}+{00/[!] [/!][showif [GMTexpires]>86400][math]floor([GMTexpires]/86400)[/math][/showif][!] [/!][showif [GMTexpires]<86401]01[/showif][!] [/!]/0000}[/math][/format][!] [/!][/else][!] [/!][/if][!] [/!] [Format Seconds_To_Time][GMTexpires][/Format][!] [/!] GMT[/text] [!] Actually set the MIME headers [/!] [SETMIMEHEADER name=Last-modified&value=[MIMEmodified]] [SETMIMEHEADER name=Expires&value=[MIMEexpires]] -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
. To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/
Associated Messages, from the most recent to the oldest:
WebMaster wrote: > > Checked this, all these customers have all come directly to our site (IE, > directly typed in the URL), there are no referrer URL at all. > > And the fact that all 15 are using exactly the same ISP, leads me to think > that it has to be a proxy cache server issue. > If this is a proxy cache issue, you can try using the following include file, which is what I had to do to stop AOL from caching my pages (and they have the stupidest cache around!).Call this as [include MIMEHeaders.inc&expires=0] if you want no cache and some other value if you do want it to cache. In addition, we store our cart in a session cookie, which no cache should be able to get at.[!] ------- MIMEHeaders.inc ------- [/!] [!]5:00 is MY offset from UTC - replace with YOUR offset[/!] [!]Also remember to change when daylight savings time takes effect[/!] [math time&show=f]GMToffset={4:00:00}[/math][!] Configure useful variables [/!] [math time&show=f]GMT={[date %X]}+[GMToffset][/math] [math time&show=f]NOW={[date %X]}[/math][!] Check for input variable [/!] [if [expires]=[raw][expires][/raw]] [then] [math show=f]expiresat=3600[/math][/then] [else] [math show=f]expiresat=[expires]*60[/math][/else] [/if][!] Create the GMTexpires variable [/!] [math time&show=f]GMTexpires=[math][GMT]+[expiresat][/math][/math][!] Create the MIMEmodified string [/!] [text]MIMEmodified=[!] [/!][if ([GMT]>[NOW])][!] [/!][then][!] [/!][date format=%a, %d %b][!] [/!][/then][!] [/!][else][!]if GMT after midnight then increment date too [/!][format days_to_date %a, %d %b][math]{[date]}+{00/01/0000}[/math][/format][!] [/!][/else][!] [/!][/if][!] [/!] [date format=%Y] [Format Seconds_To_Time][GMT][/Format][!] [/!] GMT[/text][!] Create the MIMEexpires string [/!] [text]MIMEexpires=[!] [/!][if ([GMT]>[NOW]) and ([GMTexpires]>[GMT]) and ([GMTexpires]<86400)][!] ---- all in the same day ---- [/!][then][!] [/!][date format=%a, %d %b %Y][!] [/!][/then][!] ---- at least one day later ---- [/!][else][!] [/!][format days_to_date %a, %d %b %Y][math]{[date]}+{00/[!] [/!][showif [GMTexpires]>86400][math]floor([GMTexpires]/86400)[/math][/showif][!] [/!][showif [GMTexpires]<86401]01[/showif][!] [/!]/0000}[/math][/format][!] [/!][/else][!] [/!][/if][!] [/!] [Format Seconds_To_Time][GMTexpires][/Format][!] [/!] GMT[/text] [!] Actually set the MIME headers [/!] [SETMIMEHEADER name=Last-modified&value=[MIMEmodified]] [SETMIMEHEADER name=Expires&value=[MIMEexpires]] -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/
John Peacock
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