Update wp plugin

src/Utils/QueryAnalyzer.php

@@ -34,6 +34,13 @@ class QueryAnalyzer {
 	 * @var \GraphQL\Type\Schema
 	 */
 	protected $schema;
+
+	/**
+	 * Indicates whether any nodes have been resolved.
+	 *
+	 * @var bool
+	 */
+	private static $nodes_resolved = false;
 
 	/**
 	 * Types that are referenced in the query
@@ -603,6 +610,7 @@ public function set_query_models( ?Schema $schema, ?string $query ): array {
 	 */
 	public function track_nodes( $model ) {
 		if ( isset( $model->id ) && in_array( get_class( $model ), $this->get_query_models(), true ) ) {
+			self::$nodes_resolved = true;
 			// Is this model type part of the requested/returned data in the asked for query?
 
 			/**
@@ -626,6 +634,30 @@ public function track_nodes( $model ) {
 		return $model;
 	}
 
+	/**
+	 * Checks if any nodes have been resolved.
+	 *
+	 * This method is used to determine whether any nodes (or models)
+	 * were successfully resolved during the GraphQL query processing.
+	 * It returns the current state of the `nodes_resolved` flag.
+	 *
+	 * @return bool True if any nodes have been resolved, false otherwise.
+	 */
+	public static function areNodesResolved() {
+		return self::$nodes_resolved;
+	}
+
+	/**
+	 * Resets the nodes resolved status.
+	 *
+	 * This method is called at the beginning of each GraphQL request
+	 * to reset the `nodes_resolved` flag. Ensuring that each request
+	 * starts with a clean state for tracking whether nodes have been resolved.
+	 */
+	public static function resetNodesResolved() {
+		self::$nodes_resolved = false;
+	}
+
 	/**
 	 * Returns graphql keys for use in debugging and headers.
 	 *

wp-graphql.php

@@ -21,6 +21,8 @@
  * @version  1.19.0
  */
 
+use WPGraphQL\Utils\QueryAnalyzer;
+
 // Exit if accessed directly.
 if ( ! defined( 'ABSPATH' ) ) {
 	exit;
@@ -182,3 +184,21 @@ function graphql_init_appsero_telemetry() {
 }
 
 graphql_init_appsero_telemetry();
+
+add_filter(
+	'graphql_process_http_request_response',
+	static function ( $response, $result, $operation, $request ) {
+		$nodesResolved = QueryAnalyzer::areNodesResolved();
+
+		if ( ! $nodesResolved ) {
+			header( 'Cache-Control: no-cache, must-revalidate' );
+		}
+
+		// Correctly reset nodes_resolved for the next request.
+		QueryAnalyzer::resetNodesResolved();
+
+		return $response;
+	},
+	10,
+	4
+);