Admin Bar is Not Displayed
If you cannot see the admin bar on the front-end after enable WP Fastest Cache, you should enable the Logged-in Users option.
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How to Remove the Footer Comment
By default, WP Fastest Cache adds an HTML comment in the page footer that indicates when and for how long…
Clear Cache Process
WP Fastest Cache does not clear the cache instantly not to increase the CPU usage.
How to Clear All The Cache After Update Post
Follow the link: http://www.wpfastestcache.com/tutorial/to-clear-cache-after-update/