Title: TTFB high when enable cache
Last modified: September 22, 2021

---

# TTFB high when enable cache

 *  Resolved [vuthanhcong96](https://wordpress.org/support/users/vuthanhcong96/)
 * (@vuthanhcong96)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/)
 * when i enable cache, TTFB my website increase 1-2s in first visit.
    Can you help
   me with that issue? Thank you very much
    -  This topic was modified 4 years, 11 months ago by [vuthanhcong96](https://wordpress.org/support/users/vuthanhcong96/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fttfb-high-when-enable-cache%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * (@qtwrk)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14899724)
 * Hi,
 * please provide the report number , you can get it in toolbox -> report -> click“
   send to LiteSpeed”
 * Best regards,
 *  Thread Starter [vuthanhcong96](https://wordpress.org/support/users/vuthanhcong96/)
 * (@vuthanhcong96)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14900107)
 * Hi [@qtwrk](https://wordpress.org/support/users/qtwrk/) ,
 * My report number is LWOLAUIB
 * Best regards,
 *  Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * (@qtwrk)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14903709)
 * Hi,
 * please try the following cases :
 * 1. disable cache plugin , access a page thrice , record the TTFB , calculate 
   the average
 * 2. enable cache plugin , access the same page as 1) , as cache miss , record 
   the TTFB, then purge cache, access again , record the TTFB , repeat this thrice
   and get average time
 * 3. please export your current setting and reset to default (which I think you
   are default already , but just give a clean status) , and repeat same process
   as 2)
 * Best regards,
 *  Thread Starter [vuthanhcong96](https://wordpress.org/support/users/vuthanhcong96/)
 * (@vuthanhcong96)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14904646)
 * Hi [@qtwrk](https://wordpress.org/support/users/qtwrk/) ,
 * When i take the above your steps, i realize the cause was ESI.
    If i use shortcode[
   esi rvx-woo-reviews cache=”public” ttl=”0″], TTFB average time is 6.5s, shortcode[
   rvx-woo-reviews] TTFB is only 5s.
 * Best regards,
 *  Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * (@qtwrk)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14907241)
 * Hi,
 * yeah well , ESI is like a separated individual request , it also depends on how
   many times your server takes to process
 * without ESI , it’s like 1 request only
 * with ESI , it will be 1 main request + 1 sub-ESI-request , so it takes more time.

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

The topic ‘TTFB high when enable cache’ is closed to new replies.

 * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181)
 * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/)

 * 5 replies
 * 2 participants
 * Last reply from: [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * Last activity: [4 years, 11 months ago](https://wordpress.org/support/topic/ttfb-high-when-enable-cache/#post-14907241)
 * Status: resolved