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Adjust caching for get_term_by() calls:

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* Remove md5 hashes for term name cache keys
* Remove the namespace for the keys for `names` and `slugs` and add them to the group names
* Remove `wp_get_last_changed()`, which @nacin hated
 
Props tollmanz.
Fixes #21760.

Built from https://develop.svn.wordpress.org/trunk@30073


git-svn-id: http://core.svn.wordpress.org/trunk@30073 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Scott Taylor 2014-10-28 21:05:23 +00:00
parent 9d0e0a00f9
commit 315612a96b
3 changed files with 20 additions and 37 deletions
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18
wp-includes/functions.php
View File

@ -4742,21 +4742,3 @@ function wp_validate_boolean( $var ) {
return (bool) $var;
}
/**
* Helper function to retrieve an incrementer identified by $group
*
* @since 4.1.0
*
* @param string $group The cache group for the incrementer.
* @param bool $force Whether or not to generate a new incrementor.
* @return int The timestamp representing 'last_changed'.
*/
function wp_get_last_changed( $group, $force = false ) {
$last_changed = wp_cache_get( 'last_changed', $group );
if ( ! $last_changed || true === $force ) {
$last_changed = microtime();
wp_cache_set( 'last_changed', $last_changed, $group );
}
return $last_changed;
}

37
wp-includes/taxonomy.php
View File

@ -1291,11 +1291,11 @@ function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') {
return $error;
}
$group = $taxonomy . ':' . wp_get_last_changed( 'terms' );
$incrementor = wp_cache_get( 'last_changed', 'terms' );
if ( is_object($term) && empty($term->filter) ) {
wp_cache_add( $term->term_id, $term, $taxonomy );
wp_cache_add( "slug:{$term->slug}", $term->term_id, $group );
wp_cache_add( "name:" . md5( $term->name ), $term->term_id, $group );
wp_cache_add( $term->term_id, $term, $taxonomy . ':terms:' . $incrementor );
wp_cache_add( $term->slug, $term->term_id, $taxonomy . ':slugs:' . $incrementor );
wp_cache_add( $term->name, $term->term_id, $taxonomy . ':names:' . $incrementor );
$_term = $term;
} else {
if ( is_object($term) )
@ -1306,9 +1306,9 @@ function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') {
$_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND t.term_id = %d LIMIT 1", $taxonomy, $term) );
if ( ! $_term )
return null;
wp_cache_add( $term, $_term, $taxonomy );
wp_cache_add( "slug:{$_term->slug}", $term, $group );
wp_cache_add( "name:" . md5( $_term->name ), $term, $group );
wp_cache_add( $term, $_term, $taxonomy . ':terms:' . $incrementor );
wp_cache_add( $_term->slug, $term, $taxonomy . ':slugs:' . $incrementor );
wp_cache_add( $_term->name, $term, $taxonomy . ':names:' . $incrementor );
}
}
@ -1381,14 +1381,14 @@ function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw
return false;
$cache = false;
$group = $taxonomy . ':' . wp_get_last_changed( 'terms' );
$incrementor = wp_cache_get( 'last_changed', 'terms' );
if ( 'slug' == $field ) {
$field = 't.slug';
$value = sanitize_title($value);
if ( empty($value) )
return false;
$term_id = wp_cache_get( "slug:{$value}", $group );
$term_id = wp_cache_get( $value, $taxonomy . ':slugs:' . $incrementor );
if ( $term_id ) {
$value = $term_id;
$cache = true;
@ -1397,7 +1397,7 @@ function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw
// Assume already escaped
$value = wp_unslash($value);
$field = 't.name';
$term_id = wp_cache_get( "name:" . md5( $value ), $group );
$term_id = wp_cache_get( $value, $taxonomy . ':names:' . $incrementor );
if ( $term_id ) {
$value = $term_id;
$cache = true;
@ -1429,9 +1429,9 @@ function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw
$term = sanitize_term($term, $taxonomy, $filter);
wp_cache_add( $term->term_id, $term, $taxonomy );
wp_cache_add( "slug:{$term->slug}", $term->term_id, $group );
wp_cache_add( "name:" . md5( $term->name ), $term->term_id, $group );
wp_cache_add( $term->term_id, $term, $taxonomy . ':terms:' . $incrementor );
wp_cache_add( $term->slug, $term->term_id, $taxonomy . ':slugs:' . $incrementor );
wp_cache_add( $term->name, $term->term_id, $taxonomy . ':names:' . $incrementor );
if ( $output == OBJECT ) {
return $term;
@ -3670,7 +3670,7 @@ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
do_action( 'clean_term_cache', $ids, $taxonomy );
}
wp_get_last_changed( 'terms', true );
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
/**
@ -3776,10 +3776,11 @@ function update_term_cache($terms, $taxonomy = '') {
if ( empty($term_taxonomy) )
$term_taxonomy = $term->taxonomy;
wp_cache_add( $term->term_id, $term, $term_taxonomy );
$group = $term_taxonomy . ':' . wp_get_last_changed( 'terms', true );
wp_cache_add( "slug:{$term->slug}", $term->term_id, $group );
wp_cache_add( "name:" . md5( $term->name ), $term->term_id, $group );
$incrementor = wp_cache_set( 'last_changed', microtime(), 'terms' );
wp_cache_add( $term->term_id, $term, $term_taxonomy . ':terms:' . $incrementor );
wp_cache_add( $term->slug, $term->term_id, $taxonomy . ':slugs:' . $incrementor );
wp_cache_add( $term->name, $term->term_id, $taxonomy . ':names:' . $incrementor );
}
}

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.1-alpha-30072';
$wp_version = '4.1-alpha-30073';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.