Newspaper theme is blocking LiteSpeed Cache (sending no-cach signal)

Hi,

Our theme do not use no-cache or DONOTCACHEPAGE.
Also, testing with a theme like “Twenty Twenty-Four” that does not have any features and comparing it with the Newspaper theme that you can build almost anything, I think, is not a good comparison, but if this is indeed something related to our theme make some tests like this. Use only the Newspaper theme without any extra plugins except the cache plugin. If it’s ok, go on with tagDiv Composer, this is the hard part of the theme. Then, with tagDiv Cloud Library and so on, until you test it with all the theme plugins you are using.
The text step after you identify the plugin that is interfering with the cache is to check the cache settings. From my experience, setting ‘/’ in cache fields will be interpreted to not cache the homepage, but this is maybe only my interpretation.

As a suggestion you can try a code like this one in the child theme (the code needs to be adjusted):

add_action( 'template_redirect', function() {
if ( class_exists( 'LSCache\\LSCWP' ) ) {
// Remove any DONOTCACHEPAGE flag that may have been set earlier
if ( defined( 'DONOTCACHEPAGE' ) && DONOTCACHEPAGE ) {
// Un-define the constant (only works if not locked), or override via filter
// Note: PHP doesn't allow undefining a constant, so we use filter below
}
// Use our filter to override caching logic
add_filter( 'litespeed_cache_allow_cache', function( $allow ) {
return true;
}, 99 );
// Clear any HTTP headers forcing no-cache
header_remove( 'Cache-Control' );
header_remove( 'Pragma' );
}
}, 0 );

Thank you!

Hi,

Please run a quick debugging snippet (in a temporary plugin or in functions.php), you can check if the theme defines that constant:
add_action( 'init', function() {
if ( defined( 'DONOTCACHEPAGE' ) && DONOTCACHEPAGE ) {
error_log( 'DONOTCACHEPAGE is defined by theme at init' );
}
});
Check your PHP error log. If you see that message, it confirms the culprit.

Constants cannot be undefined once set, the only safe way to override this is to prevent it before the theme sets it.
add_action( 'plugins_loaded', function() {
// Prevent the theme from defining DONOTCACHEPAGE later
if ( ! defined( 'DONOTCACHEPAGE' ) ) {
define( 'DONOTCACHEPAGE', false );
}
// Intercept no-cache headers
add_filter( 'nocache_headers', '__return_empty_array' );
});
How to test this safely
– Go to /wp-content/mu-plugins/ (create the folder if it doesn’t exist).
– Create a file called allow-litespeed-cache.php.
– Paste the code above.
– Clear all caches (LiteSpeed → Purge All).
– Open your site in a private/incognito window.
– Check response headers again.
If it now shows: x-litespeed-cache: hit, then the problem is confirmed and fixed.

I hope this will help you!
Thank you!

Hi Alext8,

If the suggestions above aren’t working, I recommend reaching out to the Lightspeed support team. They will be able to provide better guidance on what to do next. Please note that our support for the Lightspeed plugin is limited.

Thank you for your understanding!