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nomis5

WebmasterWorld Senior Member 5+ Year Member



 
Msg#: 4579115 posted 5:15 pm on May 29, 2013 (gmt 0)

Newbie question because I only sell a few items on my website and they are all via Pay pal single item shopping cart.

Background is that I aim to sell all items cheaper than anyone on Amazon and Ebay. I adjust the prices up or down to ensure I am always the cheapest by a few pence.

The other day a major competitor backed out selling at their low price and I was able to increase the price of one of my items by 4 on my site (and Ebay as well) still remaining the cheapest.

24 hours later I get and order for 5 of the items at the previously lower price (via my website). I assumed at first that the purchaser used a cached version of my page to make the order but he tells me he ordered the item on his mobile using Firefox.

Can Firefox use pages 24+ hours out of date for something like that? Any thoughts?

 

Marshall

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 4579115 posted 7:32 pm on May 29, 2013 (gmt 0)

Pages are frequently cached in hubs to speed up load times. To help avoid it, you can use no-cache tags in the <head>.
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="expires" content="Mon, 22 Jul 2002 11:12:01 GMT">
<!-- meta http-equiv="expires" not fully recognized -->
<meta name="robots" content="noarchive" >
<meta name="googlebot" content="noarchive" >

If you are using asp:
<% Response.CacheControl = "no-cache" %>
<% Response.AddHeader "Pragma", "no-cache" %>
<% Response.Expires = -1 %>

Not sure what the equivalent is in php.

Marshall

lorax

WebmasterWorld Administrator lorax us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4579115 posted 8:24 pm on May 29, 2013 (gmt 0)

I'm not sure how the order was placed but if you're using a script to process the orders wouldn't it pull the prices from a database or flat file? Is there any data checking being done?

lucy24

WebmasterWorld Senior Member lucy24 us a WebmasterWorld Top Contributor of All Time Top Contributors Of The Month



 
Msg#: 4579115 posted 9:28 pm on May 29, 2013 (gmt 0)

I assumed at first that the purchaser used a cached version of my page to make the order but he tells me he ordered the item on his mobile using Firefox.

How do you get from A to B? That is, how does "mobile + Firefox" translate to "can't have been cached"? Caching doesn't only happen within a physical browser. It can be done at several points in transit, including the user's ISP.

The important thing is that the server doesn't know a particular page should not be cached-- unless you tell it. And then you have to hope the ISP pays attention to this directive. (I trust the browser more than the ISP in this regard.)

piatkow

WebmasterWorld Senior Member piatkow us a WebmasterWorld Top Contributor of All Time 5+ Year Member



 
Msg#: 4579115 posted 9:44 pm on May 29, 2013 (gmt 0)

Back in the days of 28K modems caching by ISPs was pretty well standard. With mobile connections I would not be at all suprised if this is coming back.

lucy24

WebmasterWorld Senior Member lucy24 us a WebmasterWorld Top Contributor of All Time Top Contributors Of The Month



 
Msg#: 4579115 posted 11:57 pm on May 29, 2013 (gmt 0)

One of the local ISPs is notorious for caching everything in sight-- up to and including login pages with all boxes filled in. Apparently if you're enrolled in the higher price ranges they are more likely to serve you fresh pages.

nomis5

WebmasterWorld Senior Member 5+ Year Member



 
Msg#: 4579115 posted 10:30 am on Jun 3, 2013 (gmt 0)

Thanks for the comments, nocache will be implemented on the order page soon.

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