Title: FFPC Debug info HTML comments question
Last modified: September 1, 2016

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# FFPC Debug info HTML comments question

 *  [SH10151](https://wordpress.org/support/users/sh10151/)
 * (@sh10151)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/)
 * I’m trying to verify that caching is working on my site.
 * I enable the “Add HTML debug comment” setting in the debug section of FFPC to
   view the HTML comment in the cached version of the pages.
 * I see the HTML comment okay, which is good. Specifically, I see the first section
   of the HTML comment “cache generation stats”, within which, the “generation time”
   timestamp and date never change when I reload the page, which is good, because
   those timestamps are telling when the cached version was created. Correct?
 * <!– WP-FFPC cache generation stats
    generation time: 0.146 seconds generaton 
   UNIX timestamp: 1470600507 generaton date: 2016-08-07T20:08:27+00:00 generator
   server: XXX.XXX.XXX.XXX –>
 * But in the second section, however, these timestamps do change each time I reload
   the page:
 * <!– WP-FFPC cache output stats
    cache engine: apcu UNIX timestamp: 1470600900
   date: 2016-08-07T20:15:00+00:00 from server: XXX.XXX.XXX.XXX –>
 * Is this also correct?
 * [https://wordpress.org/plugins/wp-ffpc/](https://wordpress.org/plugins/wp-ffpc/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [petermolnar](https://wordpress.org/support/users/cadeyrn/)
 * (@cadeyrn)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-7642906)
 * It is correct.
 * The first entry indicated to cache entry generation stats, the second is the 
   serving from the cache stats.
 *  Thread Starter [SH10151](https://wordpress.org/support/users/sh10151/)
 * (@sh10151)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-7642972)
 * Ok, great, thanks.
 * Also, I just have a few questions regarding how FFPC uses memory:
 * – Is there a way to tell how much memory FFPC is using on the server?
 * – How much memory will FFPC use, on average? Does it require memory to be allocated
   to it in any way or will it just use free memory?
 * – How can I see what is in the cache?
 * Thanks again. Great plugin, btw!
 *  Thread Starter [SH10151](https://wordpress.org/support/users/sh10151/)
 * (@sh10151)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-7643101)
 * Bump, please help!
 *  Plugin Author [petermolnar](https://wordpress.org/support/users/cadeyrn/)
 * (@cadeyrn)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-8791918)
 * – Is there a way to tell how much memory FFPC is using on the server?
    – How 
   much memory will FFPC use, on average? Does it require memory to be allocated
   to it in any way or will it just use free memory?
 * Depends on the backend you’re using. Memcached requires allocated memory, APCu
   doesn’t.
 * – How can I see what is in the cache?
    That completely depends on the backend.
 *  [cmistico](https://wordpress.org/support/users/cmistico/)
 * (@cmistico)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-8823112)
 * HI all,
    I’m using your plugin on my site .. I read in my backend “Driver: memcached
   Stato Backend: 127.0.0.1:20000 => up & running ”
 * but if I check “Add HTML debug comment” I don’t see anything in html .. why?
   
   this is my site.. [https://www.analisidelsangue.net](https://www.analisidelsangue.net)–
   actually TTFB about 400ms
 * so, how can I verify if this plugin it’s working on my site?
    thnkx for your 
   help!
 * (consider I have tried to use batcache plugin on my site without success…
    this
   is my configuration: – hosting siteground (ngix, memcached) – cloudflare CDN/
   reverse proxy

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘FFPC Debug info HTML comments question’ is closed to new replies.

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 * 5 replies
 * 3 participants
 * Last reply from: [cmistico](https://wordpress.org/support/users/cmistico/)
 * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/ffpc-debug-info-html-comments-question/#post-8823112)
 * Status: not resolved