Exclude Urls by Calling the Function Hook
It is very simple to exclude any url from the cache. You can call the following function in a theme or a plugin file to exclude current page.
wpfc_exclude_current_page();
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WordPress Nonce Cache
WordPress Nonces system protects URLs and forms from certain types of misuse, malicious or otherwise.
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When WP Fastest Cache is enabled, the admin toolbar may disappear.
How to Show Clean Cache Button at the Toolbar to the Authors
https://www.wpfastestcache.com/features/clear-cache-link-at-the-toolbar/