Hi,


I have one website and its main page is dynamic this i made in PHP, Now when i updating its content it is not displaying. We are accessing this website throuhg big proxy. this proxy server caching old pages, Please let me know how can i solve this issue.

Thanks
Alias

You can add no-cache headers to your php pages, as in the following example:

boxsetseries
box set series
boxset series

I didn't even realise that the Cache-Control header existed. Until now I have just been using the bottom two lines in my projects. Does it make a major difference with regards to proxies etcetera as it doesn't seem to cause any problems with the search engine crawlers?

I also use Smarty, but server's still reading data from mySQL, and I want not to do it for instance, by using the method proposed in the URL you mention. I receive +100,000 visits per day and data change 1-2 times per day. It's no worth reading these data every time user accesses the webpage.

i HAVE many SQL questions,don't know where to say

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I have just been using the bottom two lines in my projects. Does it make a major difference with regards to proxies etcetera as it doesn't seem to cause any problems with the search engine crawlers?I also use Smarty, but server's still reading data from mySQL, and I want not to do it for instance, by using the method proposed in the URL you mention.

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This entire site, like many, is built in PHP. PHP provides the power to simply 'pull' content from an external source, in the case of my site this is flat files but it could just as easily be an MySQL database or an XML file etc..

The downside to this is processing time, each request for one page can trigger multiple database queries, processing of the output, and formatting it for display... This can be quite slow on complex sites (or slower servers)

Ironically, these so-called 'dynamic' sites probably have very little changing content, this page will almost never be updated after the day it is written - yet each time someone requests it the scripts goes and fetches the content, applies various functions and filters to it, then outputs it to you...
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