Title: REST API / PURGE TAG Last modified: May 24, 2025 --- # REST API / PURGE TAG * Resolved [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/) * Hi i got a question regarding caching / purging of rest api calls * I would like to cache the rest api, and be able to purge a tag / url. I’ve implemented everything and tried both but when the purge is executed the whole rest api endpoint is getting purged aswell. I would like to specificly target a tag or an url and not purge the whole rest api. * It does work, when i turn off “purge rest api” in the cache tab and manually add the endpoint /custom-api/v1/ for example, so my code should be fine? * is this a bug or how can i make sure that only the tag / url i want to purge gets purged while keeping the cache of the rest api ? * regards Viewing 10 replies - 16 through 25 (of 25 total) [←](https://wordpress.org/support/topic/rest-api-purge-tag/?output_format=md) [1](https://wordpress.org/support/topic/rest-api-purge-tag/?output_format=md) 2 * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18485716) * the POST cache also checks against request body as well , if body changes , it will be miss * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18485866) * Ok how can i narrow down the reason i always get a miss despite the same req body + uri – i dont see any difference on that first filter load * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18485906) * well , that’s good question , after re-think about the issue , I am not sure if plugin was able to handle such request caching * it has feature to cache POST, it was designed to cache `admin-ajax.php` POST request, but not sure if it works for other URIs * I’d suggest to set up a simple admin-ajax POST to test if cache POST works or not first * for example * ```wp-block-code add_action('wp_ajax_nopriv_get_random_number', 'get_random_number_callback');function get_random_number_callback() { wp_send_json_success(array('number' => rand(1, 10000)));} ``` * then go to cache -> advanced -> ajax cache TTL , put `get_random_number 3600` * then curl it like `curl -i -X POST -d "action=get_random_number" https://your_domain. com/wp-admin/admin-ajax.php` , see if you can get cache hit there first - This reply was modified 10 months, 2 weeks ago by [qtwrk](https://wordpress.org/support/users/qtwrk/). * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18485917) * i think i found out how to do it – found this in another forum: * `CachePost on RewriteCond %{REQUEST_URI} ^/wp-json/wpgb/v2/filter/ [NC]RewriteRule.*-[ E=cache-control:no-vary] * I had to add those 2 lines aswell – now i get a hit – need to check if it works for different actions / post bodys – will update * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18486045) * ok seems to work so it needs both to work correctly: cache settings in wp plugin + htaccess rule / Apache configuration i guess it would be nice if the official doc gets updated with these information 😉Then on to the last “problem”: why is my custom rest endpoint not getting cached when i activate cache rest (without the cache uri) / why is full rest endpoint getting purged even though i have all the settings turned off * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18486053) * wasn’t that a POST request to your REST ? that by default won’t , only admin- ajax.php action configured through that cache -> advanced -> admin-ajax cache will be cached by plugin. * for purge , you got full log on that ? * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18486169) * No my custom endpoint /reviewAPI/v1/ is GET only * the purge log when i update a post is here: [https://pastebin.ubuntu.com/p/RSZMf8zfh3/](https://pastebin.ubuntu.com/p/RSZMf8zfh3/)( my custom tag gets added via my function ( and the goal was to purge posts + rest uris depending on what the post changes for other posts ) and because of the b79_REST TAG the whole REST gets purged. My fix right now is to remove that tag in the header, when one of my custom tag is present. * Same happens when i delete a post for example: * `05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] 💓 ------GET HTTP/1.1 (HTTPS)/ wp-admin/post.php 05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] Query String: post=11188&action=trash&_wpnonce=d2ebb33bcd05/27/25 17:01:22.815 [87.145.134.193: 64444 1 eKS] HTTP_REFERER: https://nookyyy.com/wp-admin/edit.php?post_type=revie... 05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit...05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif, image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.705/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] Accept Encoding: gzip, deflate, br, zstd05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] Cookie _lscache_vary: admin_bar:1;guest_mode:1;logged-in:1;role:9905/27/25 17:01:22.815 [87.145.134.193: 64444 1 eKS] X-LSCACHE: true05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] LSCACHE_VARY_VALUE: +webp05/27/25 17:01:22.815 [87.145.134.193:64444 1 eKS] X- LiteSpeed-Purge: public,stale,b79_Po.11188,b79_W.recent-posts-1,b79_FD,b79_REST => LiteSpeed\LSC->send_headers()@603 => WP_Hook->apply_filters(,ARRAY)@324 => WP_Hook->do_action(ARRAY)@348 =>/var/www/vhosts/nookyyy.com/httpdocs/wp-includes/ load.php@517 - This reply was modified 10 months, 2 weeks ago by [nookyyy](https://wordpress.org/support/users/nookyyy/). * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18486173) * [https://github.com/litespeedtech/lscache_wp/blob/3c68cfb1d478fb6eb9f0c85dadc098da1a63e19a/src/purge.cls.php#L907](https://github.com/litespeedtech/lscache_wp/blob/3c68cfb1d478fb6eb9f0c85dadc098da1a63e19a/src/purge.cls.php#L907) * looks like it was hard-coded to purge rest alone with it * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18486180) * WoW thanks for that info – i guess it would be great to add this info to the docs aswell or maybe even add such an option to the plugin when a user activates the cache rest option. * Ok but then i know everything i need to know and im able to “work around” those“ behaviours” – thanks for your help everything seems to work now on my side just needs a bit more fine tuning to purge what i want / exclude what i need * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18489439) * yeah … I have been chasing after our dev to add a filter to modify the purge header output … it will make everything much easier once it is implemented … Viewing 10 replies - 16 through 25 (of 25 total) [←](https://wordpress.org/support/topic/rest-api-purge-tag/?output_format=md) [1](https://wordpress.org/support/topic/rest-api-purge-tag/?output_format=md) 2 The topic ‘REST API / PURGE TAG’ 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/) ## Tags * [cache](https://wordpress.org/support/topic-tag/cache/) * [Purge](https://wordpress.org/support/topic-tag/purge/) * 25 replies * 2 participants * Last reply from: [qtwrk](https://wordpress.org/support/users/qtwrk/) * Last activity: [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/#post-18489439) * Status: resolved