Cache-Control in index.php Topic is solved

[theigloo22]

Hello

Is it ok to put Cache-Control at the top of index.php like this:

Code: Select all

<?php 
defined('_JEXEC') or die;
header('Cache-Control: max-age=1234567');
?>

If not, what's the best way to pass this directive in J4?

Thanks

[pe7er]

No, changing the Joomla core files = core hack.
Core hacks might cause issues and they can be overwritten with the next Joomla update.

It's better to add it using a plugin, template override, or do it directly at the server.
If you are using an Apache webserver then you might add it to the .htaccess file of your site.

[theigloo22]

Thanks, @pe7er

It's a custom template, so there is no problem with updates.

However, the .htaccess method sounds like the way to go.

[theigloo22]

So now It seems I have another problem, I contacted my hosting service and asked the same question, and they said it will not work until I fix this no-cache header.

$ curl -sI https://www.xxxxx.com/ | grep cache-control
cache-control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Does anyone know hot to fix this?

[RustyJoomla]

So now It seems I have another problem, I contacted my hosting service and asked the same question, and they said it will not work until I fix this no-cache header.

$ curl -sI https://www.xxxxx.com/ | grep cache-control
cache-control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Does anyone know hot to fix this?

I'm having this same issue, my headers are showing as

Code: Select all

Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0, no-cache, max-age=0, must-revalidate

But I can't for the life of me find where to make them change

[ceford]

libraries/vendor/joomla/application/src/AbstractWebApplication.php line 376

The values you see are normal. That is all I know!

[RustyJoomla]

Thanks for your reply.

The problem with these values is that they are essentially, overriding any caching control from the server

[SharkyKZ]

Joomla code could be improved not to override the header if it's set in the application. Or even to separate server-side and browser caching. Until that happens, you can use PHP's native header functions to remove the header.

[RustyJoomla]

Joomla code could be improved not to override the header if it's set in the application. Or even to separate server-side and browser caching. Until that happens, you can use PHP's native header functions to remove the header.

How can I use PHP's native header functions to remove the header?