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Does Facebook cache server-side files in Facebok apps?

We've fixed a bug in the registration process in our our FB app and it's working fine and we can see that people can register.

But why do we still get SOME complaints from other users that they can’t register? Is this due to Facebook caching our old server-side files
0
melwong
Asked:
melwong
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1 Solution
 
Mike DSolution ConsultantCommented:
Hi Mel,

yes, Facebook caches server side files: images, js and CSS files are often the culprits. One way to ensure the latest version is in their cache is to add a query string to the files you want updated, ie. change

...src=my_script.js...
to
...src=my_script.js?x=123...

This technique is called 'cache-busting' and is often necessary during development.  If you're using a scripting language you can add some random string (like time() in php) to the query like
<?
$cache_bust = time();
?>
...src=my_script.js?x=<?= $cache_buster ?>
This way you can easily switch it off when everything is ok.

Another thing to check is it might be a browser issue.
And last, did you set up everything for https?

Hope this helps

JD
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melwongAuthor Commented:
actually I'm referring to server side files like PHP, or htaccess. Images, Css are client side
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Mike DSolution ConsultantCommented:
Images, css are client side
I think you're mixing something up there...
And if anyone can access your htaccess file from the web you have a real big security problem!

You have to supply more information if you seriously want a solution:
How does the registration process work?
What does it mean when a user says he can't register?
Any error message?
What type of browser is he using?
A link to your app would make sense...

JD
0
 
melwongAuthor Commented:
Sorry, I'm referring to PHP files.
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Mike DSolution ConsultantCommented:
Then the answer is 'no', facebook does not cache your php files.

JD
0

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