Fixed craftcms#14324

Author: brandonkelly

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Release Notes for Craft CMS 4
 
+## Unreleased
+
+- Fixed a bug where read/write splitting was always getting disabled for `graphql/api` POST requests. ([#14324](https://github.com/craftcms/cms/issues/14324))
+
 ## 4.7.2.1 - 2024-02-08
 
 - Craft now requires Composer ^2.7.0. ([CVE-2024-24821](https://github.com/advisories/GHSA-7c6p-848j-wh5h))

src/web/Application.php

@@ -161,7 +161,7 @@ public function handleRequest($request, bool $skipSpecialHandling = false): Resp
             // Process resource requests before anything else
             $this->_processResourceRequest($request);
 
-            // Disable read/write splitting for POST requests
+            // Disable read/write splitting for most POST requests
             if (
                 $request->getIsPost() &&
                 !in_array($request->getActionSegments(), [
@@ -171,6 +171,7 @@ public function handleRequest($request, bool $skipSpecialHandling = false): Resp
                     ['element-indexes', 'get-elements'],
                     ['element-indexes', 'get-more-elements'],
                     ['element-indexes', 'get-source-tree-html'],
+                    ['graphql', 'api'],
                 ])
             ) {
                 $this->getDb()->enableReplicas = false;