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, 3 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 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/?output_format=md) [→](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/?output_format=md) * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482601) * And another question / bug: When i add the uri `/wpgb/v2/filter/?action= 31536000` to Force Public Cache URIs or Force Cache URIs it seems to never cache the request even though the headers show for example: * `x-litespeed-cache-control: public,max-age=31536000` * `x-litespeed-tag: b79_default,b79_URL.030bc8deef49f2f27a591f1a251b23ff,b79_REST, b79_AJAX.render,b79_` * you can check the behaviour here: [https://nookyyy.com/reviews/mouse/](https://nookyyy.com/reviews/mouse/) the goal would be to add tags to those requests and then be able to purge them like the ones for the other rest endpoint see above * regards * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482662) * but that is an ajax URI , not the REST URI ? * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482694) * the endpoint in my first post is 100% rest as its my custom endpoint ( GET call) * the 2nd one is `/wp-json/wpgb/v2/filter/?action=render&lang=de` for example ( POST call ) * it should be a rest call or maybe they internally req the data via ajax within that rest call ( for whatever reason ) ? * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482697) * can’t tell anything from surface , but please try grab the debug log , with ` debug include URI` to specifically target to your REST API, see how log shows * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482711) * Ok for the first issue: CACHE REST API in Cache Settings (checked) – Setting Custom TAG to REST CALL on custom REST API (works) – Caching of REST API call( works) – PURGING of that TAG (does not work – it clears FULL REST API CACHE) – IF i uncheck REST API Cache in settings it does work but the “default” REST API does not get cached anymore * Log for Rest Call: [https://pastebin.ubuntu.com/p/ZT3Z8kVvZf/](https://pastebin.ubuntu.com/p/ZT3Z8kVvZf/) * Log for PURGE: [https://pastebin.ubuntu.com/p/RSZMf8zfh3/](https://pastebin.ubuntu.com/p/RSZMf8zfh3/) * Function to purge used: * ` _foreach_ ($tags_to_purge as $tag) { ` * `$debug_string .= 'PURGE REST TAG: ' . $tag . "\n";` * `_do\_action_('litespeed_purge', $tag); }` - This reply was modified 10 months, 2 weeks ago by [nookyyy](https://wordpress.org/support/users/nookyyy/). - 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/#post-18482721) * huh ? * if you don’t see any purge log , maybe the function is not executed ? * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482723) * i see the log when i removed the uri from the debug uri inclued – edited my post * i can see that the TAG b79_REST is added – but WHY – when i dont execute my function this does not happen so its not that just by saving the post the rest data gets purged - 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/#post-18482729) * what if you do a standalone purge ? just for test * like * ```wp-block-code 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 * i did some more debuging – it seems like the purge call does actually just gets triggered when i save my post * `05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp] 💓 ------POST HTTP/1.1 (HTTPS)/ wp-admin/post.php 05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp] Query String: 05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp] HTTP_REFERER: https://nookyyy. com/wp-admin/post.php?post=11029&acti...05/25/25 15:34:35.474 [87.145.134.193: 64666 1 JIp] X-LiteSpeed-Purge: public,stale,b79_Po.11029,b79_URL./reviews/mouse/ lamzu/inca/,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 * but i turned off * Purge All On Upgrade, unchecked everything in Auto Purge Rules For Publish/Update and cleared Purge All Hooks field aswell. - This reply was modified 10 months, 2 weeks ago by [nookyyy](https://wordpress.org/support/users/nookyyy/). * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482772) * That does work * `05/25/25 15:21:44.764 [=CLI= 1 1od] X-LiteSpeed-Purge: public,stale,b79_REST_ITEMSPEC_11029 => 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 * i did some more debuging – it seems like the purge call does actually just gets triggered when i save my post * `05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp]  ------POST HTTP/1.1 (HTTPS)/ wp-admin/post.php 05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp] Query String: 05/25/25 15:34:35.473 [87.145.134.193:64666 1 JIp] HTTP_REFERER: https://nookyyy. com/wp-admin/post.php?post=11029&acti...05/25/25 15:34:35.474 [87.145.134.193: 64666 1 JIp] X-LiteSpeed-Purge: public,stale,b79_Po.11029,b79_URL./reviews/mouse/ lamzu/inca/,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 * but i turned off * Purge All On Upgrade, unchecked everything in Auto Purge Rules For Publish/Update and cleared Purge All Hooks field aswell. * Update: so i was able to find a “hack” to make sure when my tags are added that not the whole rest endpoint gets purged – but i still wonder y a post save with my settings triggers so many purge tags * ```wp-block-code // Modify LiteSpeed purge headersif (strpos($_SERVER['REQUEST_URI'], "LSCWP_NONCE") === false) {    ob_start(function($buffer) {        // Get the current purge header if it exists        $current_header = '';        foreach (headers_list() as $header) {            if (stripos($header, 'X-LiteSpeed-Purge:') !== false) {                $current_header = $header;                break;            }        }        // Extract any REST_ITEMSPEC or REST_TEMPLATE or REST_TEMPLATEtags        $purge_tags = [];        if (preg_match_all('/REST_(ITEMSPEC|TEMPLATE|DROPDOWN)_\d+/', $current_header, $matches)) {            $purge_tags = $matches[0];        }        // If we found matching tags, build new purge header        if (!empty($purge_tags)) {            $tags = implode(',b79_', $purge_tags);            @header('X-LiteSpeed-Purge: public,stale,b79_' . $tags);        }        return $buffer;    });} ``` * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18482948) * I still cant figure out why the other endpoint is not getting cached. * when i activate cache rest api calls in the cache tab a call like this should get cached correct? because its not getting cached either * [https://nookyyy.com/wp-json/wp/v2/review/11029](https://nookyyy.com/wp-json/wp/v2/review/11029) * Log of all 3 Calls: [https://pastebin.ubuntu.com/p/8bfGVbNJW8/](https://pastebin.ubuntu.com/p/8bfGVbNJW8/) * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18483951) * eh , sorry , one thing at the time * ```wp-block-code 9 => 'X-LiteSpeed-Cache-Control: public,max-age=31536000',10 => 'X-LiteSpeed-Tag: b79_default,b79_URL./wp-json/wpgb/v2/filter/,b79_REST,b79_AJAX.render,b79_', ``` * it is getting cached , no ? what do you see on response header? * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18484147) * ```wp-block-code Sure, response Heaaders for that request are ALWAYS:access-control-allow-headers: Authorization, X-WP-Nonce, Content-Disposition, Content-MD5, Content-Typeaccess-control-expose-headers: X-WP-Total, X-WP-TotalPages, Linkcache-control: public, max-age=3600content-encoding: brcontent-security-policy: upgrade-insecure-requestscontent-type: application/json; charset=UTF-8date: Mon, 26 May 2025 12:10:14 GMTexpect-ct: enforce, max-age=21600expires: Wed, 11 Jan 1984 05:00:00 GMTlink: ; rel="https://api.w.org/"permissions-policy: geolocation=(), midi=(),sync-xhr=(),accelerometer=(), gyroscope=(), magnetometer=(), camera=(), fullscreen=(self)pragma: publicreferrer-policy: strict-origin-when-cross-originserver: LiteSpeedstrict-transport-security: max-age=15768000; includeSubDomainsvary: Accept-Encoding,User-Agentx-content-type-options: nosniffx-frame-options: sameoriginx-litespeed-cache-control: public,max-age=31536000x-litespeed-tag: b79_default,b79_URL.030bc8deef49f2f27a591f1a251b23ff,b79_REST,b79_AJAX.render,b79_x-powered-by: PHP/8.3.21x-robots-tag: noindexx-xss-protection: 1; mode=block ``` * I never get the * `x-litespeed-cache: hit or miss` * regards * Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/) * (@qtwrk) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18485559) * I see, that is a POST request, you need to enable [this](https://docs.litespeedtech.com/lscache/devguide/advanced/#caching-post-responses) * Thread Starter [nookyyy](https://wordpress.org/support/users/nookyyy/) * (@nookyyy) * [10 months, 2 weeks ago](https://wordpress.org/support/topic/rest-api-purge-tag/#post-18485703) * Ok thx – activated that and now i get: * `x-litespeed-cache: miss` * every time for the same POST Req. ( would the server still cache based on the req uri or based on the uri + post data ? ) ( simply the filter req on the main load: [https://nookyyy.com/reviews/mouse/](https://nookyyy.com/reviews/mouse/)) Viewing 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/?output_format=md) [→](https://wordpress.org/support/topic/rest-api-purge-tag/page/2/?output_format=md) 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