Title: Question about cache pre-loading and user agents
Last modified: March 28, 2020

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# Question about cache pre-loading and user agents

 *  Resolved [tomdkat](https://wordpress.org/support/users/tomdkat/)
 * (@tomdkat)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/question-about-cache-pre-loading-and-user-agents/)
 * Hi! WP-Optimize appears to be running well on my site. I wanted to know, when
   the cache pre-load function runs, what user agent does it use to pre-load the
   cache? I ask because I’m seeing some strange traffic in Wordfence and I want 
   to confirm it’s the WP-Optimize cache pre-load function. I’ve seen something 
   similar on another site that uses WP Fastest Cache.
 * Does WP-Optimize use a particular user agent when visiting the site pages, to
   populate the cache?
 * Thanks!

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Marc Lacroix](https://wordpress.org/support/users/marcusig/)
 * (@marcusig)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/question-about-cache-pre-loading-and-user-agents/#post-12594652)
 * Hi,
 * > Does WP-Optimize use a particular user agent when visiting the site pages, 
   to populate the cache?
 * Yes, here’s what it uses:
 * `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like
   Gecko) Chrome/62.0.3202.89 Safari/537.36` and `Mozilla/5.0 (iPhone; CPU iPhone
   OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/
   13B143 Safari/601.1` when generating a separate file for mobile devices.
 * Best wishes,
    Marc
 *  Thread Starter [tomdkat](https://wordpress.org/support/users/tomdkat/)
 * (@tomdkat)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/question-about-cache-pre-loading-and-user-agents/#post-12595352)
 * Perfect! Thanks!
 * Peace…

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Question about cache pre-loading and user agents’ is closed to new replies.

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## Tags

 * [user-agent](https://wordpress.org/support/topic-tag/user-agent/)

 * 2 replies
 * 2 participants
 * Last reply from: [tomdkat](https://wordpress.org/support/users/tomdkat/)
 * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/question-about-cache-pre-loading-and-user-agents/#post-12595352)
 * Status: resolved