Title: Missing a cache validator
Last modified: March 3, 2019

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# Missing a cache validator

 *  Resolved [fish8888](https://wordpress.org/support/users/fish8888/)
 * (@fish8888)
 * [7 years, 3 months ago](https://wordpress.org/support/topic/missing-a-cache-validator-4/)
 * Hi, can you please help me to fix this issue on GTmatrix test speed, all of them
   are on “s” folder, I may assume that is created by PSN:
    The following resources
   are missing a cache validator. Resources that do not specify a cache validator
   cannot be refreshed efficiently. Specify a Last-Modified or ETag header to enable
   cache validation for the following resources:
 * [https://fsantosdp.com/s/1848ed.css](https://fsantosdp.com/s/1848ed.css)
    [https://fsantosdp.com/s/9a4c15.js](https://fsantosdp.com/s/9a4c15.js)
   [https://fsantosdp.com/s/ce35de.js](https://fsantosdp.com/s/ce35de.js) [https://fsantosdp.com/s/dd7940.js](https://fsantosdp.com/s/dd7940.js)
 * I have a Optimize the order of styles and scripts issue as well:
    The following
   external CSS files were included after an external JavaScript file in [https://fsantosdp.com/](https://fsantosdp.com/).
   To ensure CSS files are downloaded in parallel, always include external CSS before
   external JavaScript.
 * [https://fsantosdp.com/s/351fae.css](https://fsantosdp.com/s/351fae.css)
 * My PSN Version 0.9.37
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fmissing-a-cache-validator-4%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [Denis Ryabov](https://wordpress.org/support/users/dryabov/)
 * (@dryabov)
 * [7 years, 3 months ago](https://wordpress.org/support/topic/missing-a-cache-validator-4/#post-11270957)
 * In the case of “s” directory it is a feature, because of filename itself is a
   hash of contained data, so that any changes in data results in new filename, 
   that’s why no extra cache validation is necessary.

Viewing 1 replies (of 1 total)

The topic ‘Missing a cache validator’ is closed to new replies.

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## Tags

 * [cache-validator](https://wordpress.org/support/topic-tag/cache-validator/)

 * 1 reply
 * 2 participants
 * Last reply from: [Denis Ryabov](https://wordpress.org/support/users/dryabov/)
 * Last activity: [7 years, 3 months ago](https://wordpress.org/support/topic/missing-a-cache-validator-4/#post-11270957)
 * Status: resolved