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Multisite: Improve performance by caching not found lookups for sites and networks.

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With this change, the result of a site or network lookup by ID will be cached even if the ID does not exist. When a new site or network is created, the cache for the respective new ID is cleared.

Props mnelson4, nielsdeblaauw.
Fixes #42251.


git-svn-id: https://develop.svn.wordpress.org/trunk@45910 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Felix Arntz
2019-08-29 12:41:45 +00:00
parent 65f3124283
commit 4572bb0988
6 changed files with 111 additions and 9 deletions
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14
src/wp-includes/class-wp-network.php
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@@ -101,16 +101,20 @@ class WP_Network {
$_network = wp_cache_get( $network_id, 'networks' );
if ( ! $_network ) {
if ( false === $_network ) {
$_network = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->site} WHERE id = %d LIMIT 1", $network_id ) );
if ( empty( $_network ) || is_wp_error( $_network ) ) {
return false;
$_network = -1;
}
wp_cache_add( $network_id, $_network, 'networks' );
}
if ( is_numeric( $_network ) ) {
return false;
}
return new WP_Network( $_network );
}
@@ -231,8 +235,8 @@ class WP_Network {
return (int) $this->blog_id;
}
if ( ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) && $this->domain === DOMAIN_CURRENT_SITE && $this->path === PATH_CURRENT_SITE )
|| ( defined( 'SITE_ID_CURRENT_SITE' ) && $this->id == SITE_ID_CURRENT_SITE ) ) {
if ( ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) && DOMAIN_CURRENT_SITE === $this->domain && PATH_CURRENT_SITE === $this->path )
|| ( defined( 'SITE_ID_CURRENT_SITE' ) && SITE_ID_CURRENT_SITE == $this->id ) ) {
if ( defined( 'BLOG_ID_CURRENT_SITE' ) ) {
$this->blog_id = (string) BLOG_ID_CURRENT_SITE;
@@ -457,7 +461,7 @@ class WP_Network {
break;
}
}
if ( $network->path === '/' ) {
if ( '/' === $network->path ) {
$found = true;
break;
}