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Posts, Post Types: Add caching to _find_post_by_old_slug and _find_post_by_old_date functions.

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Cache result of database queries in `_find_post_by_old_slug` and `_find_post_by_old_date` functions. This means that repeated requests to a url where the page is not found, will result in hitting a cache for sites running persistent object caching. 

Props Spacedmonkey, dd32, mukesh27, pbearne, flixos90.
Fixes #36723.
Built from https://develop.svn.wordpress.org/trunk@53549


git-svn-id: http://core.svn.wordpress.org/trunk@53138 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
spacedmonkey 2022-06-21 13:34:13 +00:00
parent ea5c6469c9
commit ac6ce3e026
2 changed files with 25 additions and 7 deletions
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30
wp-includes/query.php
View File

@ -1150,7 +1150,16 @@ function _find_post_by_old_slug( $post_type ) {
$query .= $wpdb->prepare( ' AND DAYOFMONTH(post_date) = %d', get_query_var( 'day' ) );
}
$id = (int) $wpdb->get_var( $query );
$key = md5( $query );
$last_changed = wp_cache_get_last_changed( 'posts' );
$cache_key = "find_post_by_old_slug:$key:$last_changed";
$cache = wp_cache_get( $cache_key, 'posts' );
if ( false !== $cache ) {
$id = $cache;
} else {
$id = (int) $wpdb->get_var( $query );
wp_cache_set( $cache_key, $id, 'posts' );
}
return $id;
}
@ -1183,11 +1192,20 @@ function _find_post_by_old_date( $post_type ) {
$id = 0;
if ( $date_query ) {
$id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta AS pm_date, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_date' AND post_name = %s" . $date_query, $post_type, get_query_var( 'name' ) ) );
if ( ! $id ) {
// Check to see if an old slug matches the old date.
$id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts, $wpdb->postmeta AS pm_slug, $wpdb->postmeta AS pm_date WHERE ID = pm_slug.post_id AND ID = pm_date.post_id AND post_type = %s AND pm_slug.meta_key = '_wp_old_slug' AND pm_slug.meta_value = %s AND pm_date.meta_key = '_wp_old_date'" . $date_query, $post_type, get_query_var( 'name' ) ) );
$query = $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta AS pm_date, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_date' AND post_name = %s" . $date_query, $post_type, get_query_var( 'name' ) );
$key = md5( $query );
$last_changed = wp_cache_get_last_changed( 'posts' );
$cache_key = "find_post_by_old_date:$key:$last_changed";
$cache = wp_cache_get( $cache_key, 'posts' );
if ( false !== $cache ) {
$id = $cache;
} else {
$id = (int) $wpdb->get_var( $query );
if ( ! $id ) {
// Check to see if an old slug matches the old date.
$id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts, $wpdb->postmeta AS pm_slug, $wpdb->postmeta AS pm_date WHERE ID = pm_slug.post_id AND ID = pm_date.post_id AND post_type = %s AND pm_slug.meta_key = '_wp_old_slug' AND pm_slug.meta_value = %s AND pm_date.meta_key = '_wp_old_date'" . $date_query, $post_type, get_query_var( 'name' ) ) );
}
wp_cache_set( $cache_key, $id, 'posts' );
}
}

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '6.1-alpha-53548';
$wp_version = '6.1-alpha-53549';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.