What is WordPress Hook: rest_send_nocache_headers
The rest_send_nocache_headers hook in WordPress is used to send cache control headers in the REST API responses. This hook allows developers to modify the cache control headers before they are sent with the REST API response.
Understanding the Hook: rest_send_nocache_headers
The rest_send_nocache_headers hook is located within the WordPress REST API process. It is specifically used to add cache control headers to the REST API responses, allowing developers to control how caching is handled for these responses.
Hook Parameters (if applicable): rest_send_nocache_headers
The rest_send_nocache_headers hook does not accept any arguments or parameters. It is a simple hook that allows developers to modify cache control headers directly.
Hook Doesn’t Work: rest_send_nocache_headers
If the rest_send_nocache_headers hook doesn’t work as expected, it could be due to conflicts with other plugins or themes that modify cache control headers. It is recommended to deactivate other plugins or switch to a default theme to troubleshoot the issue.
Best Practices & Usage Notes (if applicable): rest_send_nocache_headers
When using the rest_send_nocache_headers hook, it is important to consider the impact on performance and caching behavior. It is best practice to only modify cache control headers if necessary and to thoroughly test any changes to ensure they do not negatively impact the performance of the REST API.
Usage Example: rest_send_nocache_headers
“`php
function custom_rest_send_nocache_headers() {
header( ‘Cache-Control: no-cache, no-store, must-revalidate’ );
header( ‘Pragma: no-cache’ );
header( ‘Expires: 0’ );
}
add_action( ‘rest_send_nocache_headers’, ‘custom_rest_send_nocache_headers’ );
“`