diff -r c7c0fbc09788 -r 5e8dcbe22c24 web/wp-content/plugins/bbpress/includes/core/cache.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-content/plugins/bbpress/includes/core/cache.php	Tue Dec 04 18:43:10 2012 -0800
@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * bbPress Cache Helpers
+ *
+ * Helper functions used to communicate with WordPress's various caches. Many
+ * of these functions are used to work around specific WordPress nuances. They
+ * are subject to changes, tweaking, and will need iteration as performance
+ * improvements are made to WordPress core.
+ *
+ * @package bbPress
+ * @subpackage Cache
+ */
+
+// Exit if accessed directly
+if ( !defined( 'ABSPATH' ) ) exit;
+
+/** Helpers *******************************************************************/
+
+/**
+ * Skip invalidation of child post content when editing a parent.
+ *
+ * This prevents invalidating caches for topics and replies when editing a forum
+ * or a topic. Without this in place, WordPress will attempt to invalidate all
+ * child posts whenever a parent post is modified. This can cause thousands of
+ * cache invalidations to occur on a single edit, which is no good for anyone.
+ *
+ * @since bbPress (r4011)
+ *
+ * @package bbPress
+ * @subpackage Cache
+ */
+class BBP_Skip_Children {
+
+	/**
+	 * @var int Post ID being updated
+	 */
+	private $updating_post = 0;
+
+	/**
+	 * @var bool The original value of $_wp_suspend_cache_invalidation global
+	 */
+	private $original_cache_invalidation = false;
+
+	/** Methods ***************************************************************/
+
+	/**
+	 * Hook into the 'pre_post_update' action.
+	 *
+	 * @since bbPress (r4011)
+	 */
+	public function __construct() {
+		add_action( 'pre_post_update', array( $this, 'pre_post_update' ) );
+	}
+
+	/**
+	 * Only clean post caches for main bbPress posts.
+	 *
+	 * Check that the post being updated is a bbPress post type, saves the
+	 * post ID to be used later, and adds an action to 'clean_post_cache' that
+	 * prevents child post caches from being cleared.
+	 *
+	 * @since bbPress (r4011)
+	 *
+	 * @param int $post_id The post ID being updated
+	 * @return If invalid post data
+	 */
+	public function pre_post_update( $post_id = 0 ) {
+
+		// Bail if post ID is not a bbPress post type
+		if ( empty( $post_id ) || ! bbp_is_custom_post_type( $post_id ) )
+			return;
+
+		// Store the $post_id
+		$this->updating_post = $post_id;
+
+		// Skip related post cache invalidation. This prevents invalidating the
+		// caches of the child posts when there is no reason to do so.
+		add_action( 'clean_post_cache', array( $this, 'skip_related_posts' ) );
+	}
+
+	/**
+	 * Skip cache invalidation of related posts if the post ID being invalidated
+	 * is not the one that was just updated.
+	 *
+	 * @since bbPress (r4011)
+	 *
+	 * @param int $post_id The post ID of the cache being invalidated
+	 * @return If invalid post data
+	 */
+	public function skip_related_posts( $post_id = 0 ) {
+
+		// Bail if this post is not the current bbPress post
+		if ( empty( $post_id ) || ( $this->updating_post !== $post_id ) )
+			return;
+
+		// Stash the current cache invalidation value in a variable, so we can
+		// restore back to it nicely in the future.
+		global $_wp_suspend_cache_invalidation;
+
+		$this->original_cache_invalidation = $_wp_suspend_cache_invalidation;
+
+		// Turn off cache invalidation
+		wp_suspend_cache_invalidation( true );
+
+		// Restore cache invalidation
+		add_action( 'wp_insert_post', array( $this, 'restore_cache_invalidation' ) );
+	}
+
+	/**
+	 * Restore the cache invalidation to its previous value.
+	 *
+	 * @since bbPress (r4011)
+	 * @uses wp_suspend_cache_invalidation()
+	 */
+	public function restore_cache_invalidation() {
+		wp_suspend_cache_invalidation( $this->original_cache_invalidation );
+	}
+}
+new BBP_Skip_Children();
+
+/** General *******************************************************************/
+
+/**
+ * Will clean a post in the cache.
+ *
+ * Will call to clean the term object cache associated with the post ID.
+ *
+ * @since bbPress (r4040)
+ *
+ * @uses do_action() Calls 'bbp_clean_post_cache' on $id
+ * @param object|int $_post The post object or ID to remove from the cache
+ */
+function bbp_clean_post_cache( $_post = '' ) {
+
+	// Bail if no post
+	$_post = get_post( $_post );
+	if ( empty( $_post ) )
+		return;
+
+	wp_cache_delete( $_post->ID, 'posts'     );
+	wp_cache_delete( $_post->ID, 'post_meta' );
+
+	clean_object_term_cache( $_post->ID, $_post->post_type );
+
+	do_action( 'bbp_clean_post_cache', $_post->ID, $_post );
+
+	// Child query types to clean
+	$post_types = array(
+		bbp_get_topic_post_type(),
+		bbp_get_forum_post_type(),
+		bbp_get_reply_post_type()
+	);
+
+	// Loop through query types and clean caches
+	foreach ( $post_types as $post_type ) {
+		wp_cache_delete( 'bbp_get_forum_'     . $_post->ID . '_reply_id',                              'bbpress' );
+		wp_cache_delete( 'bbp_parent_'        . $_post->ID . '_type_' . $post_type . '_child_last_id', 'bbpress' );
+		wp_cache_delete( 'bbp_parent_'        . $_post->ID . '_type_' . $post_type . '_child_count',   'bbpress' );
+		wp_cache_delete( 'bbp_parent_public_' . $_post->ID . '_type_' . $post_type . '_child_ids',     'bbpress' );
+		wp_cache_delete( 'bbp_parent_all_'    . $_post->ID . '_type_' . $post_type . '_child_ids',     'bbpress' );
+	}
+
+	// Invalidate parent caches
+	if ( ! empty( $_post->post_parent ) ) {
+		bbp_clean_post_cache( $_post->post_parent );
+	}
+}