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Transients: Clear expired transients from the database in a daily cron task. 

Fixes #41699


git-svn-id: https://develop.svn.wordpress.org/trunk@41963 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Dion Hulse 2017-10-21 13:21:24 +00:00
parent 5233a95355
commit 899fb2f7f6
4 changed files with 66 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/wp-admin/includes/schema.php
View File

@ -584,27 +584,8 @@ function populate_options() {
// Delete obsolete magpie stuff.
$wpdb->query("DELETE FROM $wpdb->options WHERE option_name REGEXP '^rss_[0-9a-f]{32}(_ts)?$'");
/*
* Deletes all expired transients. The multi-table delete syntax is used
* to delete the transient record from table a, and the corresponding
* transient_timeout record from table b.
*/
$time = time();
$sql = "DELETE a, b FROM $wpdb->options a, $wpdb->options b
WHERE a.option_name LIKE %s
AND a.option_name NOT LIKE %s
AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
AND b.option_value < %d";
$wpdb->query( $wpdb->prepare( $sql, $wpdb->esc_like( '_transient_' ) . '%', $wpdb->esc_like( '_transient_timeout_' ) . '%', $time ) );
if ( is_main_site() && is_main_network() ) {
$sql = "DELETE a, b FROM $wpdb->options a, $wpdb->options b
WHERE a.option_name LIKE %s
AND a.option_name NOT LIKE %s
AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
AND b.option_value < %d";
$wpdb->query( $wpdb->prepare( $sql, $wpdb->esc_like( '_site_transient_' ) . '%', $wpdb->esc_like( '_site_transient_timeout_' ) . '%', $time ) );
}
// Clear expired transients
delete_expired_transients( true );
}
/**

17
src/wp-admin/includes/upgrade.php
View File

@ -1746,21 +1746,8 @@ function upgrade_460() {
function upgrade_network() {
global $wp_current_db_version, $wpdb;
// Always.
if ( is_main_network() ) {
/*
* Deletes all expired transients. The multi-table delete syntax is used
* to delete the transient record from table a, and the corresponding
* transient_timeout record from table b.
*/
$time = time();
$sql = "DELETE a, b FROM $wpdb->sitemeta a, $wpdb->sitemeta b
WHERE a.meta_key LIKE %s
AND a.meta_key NOT LIKE %s
AND b.meta_key = CONCAT( '_site_transient_timeout_', SUBSTRING( a.meta_key, 17 ) )
AND b.meta_value < %d";
$wpdb->query( $wpdb->prepare( $sql, $wpdb->esc_like( '_site_transient_' ) . '%', $wpdb->esc_like ( '_site_transient_timeout_' ) . '%', $time ) );
}
// Always clear expired transients
delete_expired_transients( true );
// 2.8.
if ( $wp_current_db_version < 11549 ) {

11
src/wp-includes/default-filters.php
View File

@ -317,14 +317,17 @@ add_action( 'publish_post', '_publish_post_hook',
add_action( 'transition_post_status', '_transition_post_status', 5, 3 );
add_action( 'transition_post_status', '_update_term_count_on_transition_post_status', 10, 3 );
add_action( 'comment_form', 'wp_comment_form_unfiltered_html_nonce' );
add_action( 'wp_scheduled_delete', 'wp_scheduled_delete' );
add_action( 'wp_scheduled_auto_draft_delete', 'wp_delete_auto_drafts' );
add_action( 'admin_init', 'send_frame_options_header', 10, 0 );
add_action( 'importer_scheduled_cleanup', 'wp_delete_attachment' );
add_action( 'upgrader_scheduled_cleanup', 'wp_delete_attachment' );
add_action( 'try_gutenberg_panel', 'wp_try_gutenberg_panel' );
add_action( 'welcome_panel', 'wp_welcome_panel' );
// Cron tasks
add_action( 'wp_scheduled_delete', 'wp_scheduled_delete' );
add_action( 'wp_scheduled_auto_draft_delete', 'wp_delete_auto_drafts' );
add_action( 'importer_scheduled_cleanup', 'wp_delete_attachment' );
add_action( 'upgrader_scheduled_cleanup', 'wp_delete_attachment' );
add_action( 'delete_expired_transients', 'delete_expired_transients' );
// Navigation menu actions
add_action( 'delete_post', '_wp_delete_post_menu_item' );
add_action( 'delete_term', '_wp_delete_tax_menu_item', 10, 3 );

55
src/wp-includes/option.php
View File

@ -816,6 +816,61 @@ function set_transient( $transient, $value, $expiration = 0 ) {
return $result;
}
/**
* Deletes all expired transients.
*
* The multi-table delete syntax is used to delete the transient record
* from table a, and the corresponding transient_timeout record from table b. +
*
* @since 4.9.0
*
* @param bool $force_db Optional. Force cleanup to run against the database even when an external object cache is used.
*/
function delete_expired_transients( $force_db = false) {
global $wpdb;
if ( ! $force_db && wp_using_ext_object_cache() ) {
return;
}
$wpdb->query( $wpdb->prepare(
"DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b
WHERE a.option_name LIKE %s
AND a.option_name NOT LIKE %s
AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
AND b.option_value < %d",
$wpdb->esc_like( '_transient_' ) . '%',
$wpdb->esc_like( '_transient_timeout_' ) . '%',
time()
) );
if ( ! is_multisite() ) {
// non-Multisite stores site transients in the options table.
$wpdb->query( $wpdb->prepare(
"DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b
WHERE a.option_name LIKE %s
AND a.option_name NOT LIKE %s
AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
AND b.option_value < %d",
$wpdb->esc_like( '_site_transient_' ) . '%',
$wpdb->esc_like( '_site_transient_timeout_' ) . '%',
time()
) );
} elseif ( is_multisite() && is_main_site() && is_main_network() ) {
// Multisite stores site transients in the sitemeta table.
$wpdb->query( $wpdb->prepare(
"DELETE a, b FROM {$wpdb->sitemeta} a, {$wpdb->sitemeta} b
WHERE a.meta_key LIKE %s
AND a.meta_key NOT LIKE %s
AND b.meta_key = CONCAT( '_site_transient_timeout_', SUBSTRING( a.meta_key, 17 ) )
AND b.meta_value < %d",
$wpdb->esc_like( '_site_transient_' ) . '%',
$wpdb->esc_like( '_site_transient_timeout_' ) . '%',
time()
) );
}
}
/**
* Saves and restores user interface settings stored in a cookie.
*