/*
* Plugin Name: APCu Object Cache
* Description: APCu backend for the WP Object Cache.
* Based on Plugin named APCu Object Cache Backend
* Plugin URI: https://wordpress.org/plugins/apcu/
* Author: Pierre Schmitz
* Author URI: https://pierre-schmitz.com/
* Plugin URI: https://wordpress.org/plugins/apcu/
*
*
* @Authors James Dugger, Jonathan Bardo
* @copyright 2017 GoDaddy Inc. 14455 N. Hayden Road Scottsdale, Arizona
*/
$oc_logged_in = false;
foreach ( $_COOKIE as $k => $v ) {
if ( preg_match( '/^comment_author|wordpress_logged_in_[a-f0-9]+|woocommerce_items_in_cart|PHPSESSID_|edd_wp_session|edd_items_in_cartcc_cart_key|ccm_token/', $k ) ) {
$oc_logged_in = true;
break;
}
}
$oc_blocked_page = ( defined( 'WP_ADMIN' ) || defined( 'DOING_AJAX' ) || defined( 'XMLRPC_REQUEST' ) || 'wp-login.php' === basename( $_SERVER['SCRIPT_FILENAME'] ) );
function wpaas_is_using_apcu() {
return version_compare( PHP_VERSION, '5.6.0', '>=' ) && function_exists( 'apcu_fetch' );
}
if ( 'cli' !== php_sapi_name() && ! $oc_logged_in && ! $oc_blocked_page && wpaas_is_using_apcu() ) :
/**
* Save the transients to the DB. The explanation is a bit too long
* for code. The tl;dr of it is that we don't have a single 'fast cache'
* source yet (like memcached) and so some long lived items like transients
* are still best cached in the db and then brought back into APC
*
* @param string $transient
* @param mixed $value
* @param int $expire
* @param boolean $site = false
*
* @return bool
*/
function wpaas_save_transient( $transient, $value, $expire, $site = false ) {
global $wp_object_cache, $wpdb;
// The 'special' transient option names
$transient_timeout = ( $site ? '_site' : '' ) . '_transient_timeout_' . $transient;
$transient = ( $site ? '_site' : '' ) . '_transient_' . $transient;
// Cap expiration at 24 hours to avoid littering the DB
if ( $expire == 0 ) {
$expire = 24 * 60 * 60;
}
// Save to object cache
$wp_object_cache->set( $transient, $value, 'options', $expire );
$wp_object_cache->set( $transient_timeout, time() + $expire, 'options', $expire );
// Update alloptions
$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
$alloptions[ $transient ] = $value;
$alloptions[ $transient_timeout ] = time() + $expire;
$wp_object_cache->set( 'alloptions', $alloptions, 'options' );
// Use the normal update option logic
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
if ( $site && is_multisite() ) {
$wpdb->query(
$wpdb->prepare(
"INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
$transient_timeout,
$expire
)
);
$wpdb->query(
$wpdb->prepare(
"INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
$transient,
maybe_serialize( $value )
)
);
} else {
$wpdb->query(
$wpdb->prepare(
"INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
$transient_timeout,
$expire
)
);
$wpdb->query(
$wpdb->prepare(
"INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
$transient,
maybe_serialize( $value )
)
);
}
$wpdb->suppress_errors( $flag );
}
return true;
}
function wpaas_prune_transients() {
global $wpdb;
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb && function_exists( 'is_main_site' ) && function_exists( 'is_main_network' ) ) {
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
// Lifted straight from schema.php
// 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();
$wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
a.option_name LIKE '\_transient\_%' AND
a.option_name NOT LIKE '\_transient\_timeout\_%' AND
b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
AND b.option_value < $time" );
if ( is_main_site() && is_main_network() ) {
$wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
a.option_name LIKE '\_site\_transient\_%' AND
a.option_name NOT LIKE '\_site\_transient\_timeout\_%' AND
b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
AND b.option_value < $time" );
}
$wpdb->suppress_errors( $flag );
}
}
/**
* If another cache was flushed or updated, sync across all servers / processes using
* the database as the authority. This uses the database as the authority for timestamps
* as well to avoid drift between servers.
* @return void
*/
function wpaas_init_sync_cache() {
global $wpdb;
if ( empty( $wpdb ) || ! ( $wpdb instanceof wpdb ) ) {
return;
}
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$result = $wpdb->get_results(
"SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name = 'gd_system_last_cache_flush' UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
ARRAY_A
);
$wpdb->suppress_errors( $flag );
if ( empty( $result ) ) {
return;
}
$master_flush = false;
foreach ( $result as $row ) {
switch ( $row['option_name'] ) {
case 'current_time' :
$current_time = $row['option_value'];
break;
case 'gd_system_last_cache_flush' :
$master_flush = $row['option_value'];
break;
}
}
$local_flush = wp_cache_get( 'gd_system_last_cache_flush' );
if ( false === $local_flush || $local_flush < $master_flush ) {
wp_cache_flush( true );
wp_cache_set( 'gd_system_last_cache_flush', $current_time );
}
}
/**
* Start default implementation of object cache
*/
if ( ! defined( 'WP_APC_KEY_SALT' ) ) {
define( 'WP_APC_KEY_SALT', '' );
}
function wp_cache_add( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
if ( 'transient' == $group ) {
wpaas_save_transient( $key, $data, $expire );
return $wp_object_cache->add( "_transient_$key", $data, 'options', $expire );
} elseif ( 'site-transient' == $group ) {
wpaas_save_transient( $key, $data, $expire, true );
return $wp_object_cache->add( "_site_transient_$key", $data, 'site-options', $expire );
} else {
return $wp_object_cache->add( $key, $data, $group, $expire );
}
}
function wp_cache_incr( $key, $n = 1, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->incr2( $key, $n, $group );
}
function wp_cache_decr( $key, $n = 1, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->decr( $key, $n, $group );
}
function wp_cache_close() {
return true;
}
function wp_cache_delete( $key, $group = '' ) {
global $wp_object_cache, $wpdb;
if ( 'transient' == $group ) {
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$wpdb->query(
$wpdb->prepare(
"DELETE FROM `{$wpdb->prefix}options` WHERE option_name IN ( %s, %s );",
"_transient_{$key}",
"_transient_timeout_{$key}"
)
);
$wpdb->suppress_errors( $flag );
}
$wp_object_cache->delete( "_transient_timeout_$key", 'options' );
// Update alloptions
$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
unset( $alloptions["_transient_$key"] );
unset( $alloptions["_transient_timeout_$key"] );
$wp_object_cache->set( 'alloptions', $alloptions, 'options' );
return $wp_object_cache->delete( "_transient_$key", 'options' );
} elseif ( 'site-transient' == $group ) {
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$table = $wpdb->options;
if ( is_multisite() ) {
$table = $wpdb->sitemeta;
}
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$wpdb->query(
$wpdb->prepare(
"DELETE FROM `{$table}` WHERE option_name IN ( %s, %s );",
"_transient_{$key}",
"_transient_timeout_{$key}"
)
);
$wpdb->suppress_errors( $flag );
}
$wp_object_cache->delete( "_transient_timeout_$key", 'site-options' );
// Update alloptions
$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
unset( $alloptions["_site_transient_$key"] );
unset( $alloptions["_site_transient_timeout_$key"] );
$wp_object_cache->set( 'alloptions', $alloptions, 'options' );
return $wp_object_cache->delete( "_site_transient_$key", 'site-options' );
}
return $wp_object_cache->delete( $key, $group );
}
function wp_cache_flush( $local_flush = false ) {
global $wp_object_cache, $wpdb;
if ( ! $local_flush ) {
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$wpdb->query( "INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( 'gd_system_last_cache_flush', UNIX_TIMESTAMP( NOW() ), 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );" );
$wpdb->suppress_errors( $flag );
}
}
return $wp_object_cache->flush();
}
function wp_cache_get( $key, $group = '', $force = false ) {
global $wp_object_cache, $wpdb;
if ( 'transient' == $group ) {
$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
if ( isset( $alloptions["_transient_$key"] ) && isset( $alloptions["_transient_timeout_$key"] ) && $alloptions["_transient_timeout_$key"] > time() ) {
return maybe_unserialize( $alloptions["_transient_$key"] );
}
$transient = $wp_object_cache->get( "_transient_$key", 'options', $force );
$timeout = $wp_object_cache->get( "_transient_timeout_$key", 'options', $force );
if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) {
return maybe_unserialize( $transient );
}
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$result = $wpdb->get_results(
$wpdb->prepare(
"SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
"_transient_{$key}",
"_transient_timeout_{$key}"
),
ARRAY_A
);
$wpdb->suppress_errors( $flag );
if ( ! empty( $result ) ) {
$transient = false;
$timeout = false;
$current_time = time();
foreach ( $result as $row ) {
switch ( $row['option_name'] ) {
case "_transient_$key" :
$transient = $row['option_value'];
break;
case "_transient_timeout_$key" :
$timeout = $row['option_value'];
break;
case 'current_time' :
$current_time = $row['option_value'];
break;
}
}
if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) {
return maybe_unserialize( $transient );
}
}
}
return false;
} elseif ( 'site-transient' == $group ) {
$transient = $wp_object_cache->get( "_site_transient_$key", 'options', $force );
$timeout = $wp_object_cache->get( "_site_transient_timeout_$key", 'options', $force );
if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) {
return maybe_unserialize( $transient );
}
if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
$table = $wpdb->options;
if ( is_multisite() ) {
$table = $wpdb->sitemeta;
}
$flag = $wpdb->suppress_errors;
$wpdb->suppress_errors( true );
$result = $wpdb->get_results(
$wpdb->prepare(
"SELECT option_name, option_value FROM `{$table}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
"_site_transient_{$key}",
"_site_transient_timeout_{$key}"
),
ARRAY_A
);
$wpdb->suppress_errors( $flag );
if ( ! empty( $result ) ) {
$transient = false;
$timeout = false;
$current_time = time();
foreach ( $result as $row ) {
switch ( $row['option_name'] ) {
case "_site_transient_$key" :
$transient = $row['option_value'];
break;
case "_site_transient_timeout_$key" :
$timeout = $row['option_value'];
break;
case 'current_time' :
$current_time = $row['option_value'];
break;
}
}
if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) {
return maybe_unserialize( $transient );
}
}
}
return false;
} else {
return $wp_object_cache->get( $key, $group, $force );
}
}
function wp_cache_init() {
global $wp_object_cache;
if ( mt_rand( 1, 100 ) == 42 ) {
wpaas_prune_transients();
}
add_action( 'muplugins_loaded', 'wpaas_init_sync_cache' );
$wp_object_cache = new APCu_Object_Cache();
}
function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
return $wp_object_cache->replace( $key, $data, $group, $expire );
}
function wp_cache_set( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
if ( defined( 'WP_INSTALLING' ) == false ) {
if ( 'transient' == $group ) {
return wpaas_save_transient( $key, $data, $expire );
} elseif ( 'site-transient' == $group ) {
return wpaas_save_transient( $key, $data, $expire, true );
} else {
return $wp_object_cache->set( $key, $data, $group, $expire );
}
} else {
return $wp_object_cache->delete( $key, $group );
}
}
function wp_cache_switch_to_blog( $blog_id ) {
global $wp_object_cache;
return $wp_object_cache->switch_to_blog( $blog_id );
}
function wp_cache_add_global_groups( $groups ) {
global $wp_object_cache;
$wp_object_cache->add_global_groups( $groups );
}
function wp_cache_add_non_persistent_groups( $groups ) {
global $wp_object_cache;
$wp_object_cache->add_non_persistent_groups( $groups );
}
class GD_APCu_Object_Cache {
private $prefix = '';
private $local_cache = array();
private $global_groups = array();
private $non_persistent_groups = array();
private $multisite = false;
private $blog_prefix = '';
public function __construct() {
global $table_prefix;
$this->multisite = is_multisite();
$this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : '';
$this->prefix = DB_HOST . '.' . DB_NAME . '.' . $table_prefix;
}
private function get_group( $group ) {
return empty( $group ) ? 'default' : $group;
}
private function get_key( $group, $key ) {
if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
return $this->prefix . '.' . $group . '.' . $this->blog_prefix . ':' . $key;
} else {
return $this->prefix . '.' . $group . '.' . $key;
}
}
public function add( $key, $data, $group = 'default', $expire = 0 ) {
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( function_exists( 'wp_suspend_cache_addition' ) && wp_suspend_cache_addition() ) {
return false;
}
if ( isset( $this->local_cache[ $group ][ $key ] ) ) {
return false;
}
// FIXME: Somehow apcu_add does not return false if key already exists
if ( ! isset( $this->non_persistent_groups[ $group ] ) && apcu_exists( $key ) ) {
return false;
}
if ( is_object( $data ) ) {
$this->local_cache[ $group ][ $key ] = clone $data;
} else {
$this->local_cache[ $group ][ $key ] = $data;
}
if ( ! isset( $this->non_persistent_groups[ $group ] ) ) {
return apcu_add( $key, $data, (int) $expire );
}
return true;
}
public function add_global_groups( $groups ) {
if ( is_array( $groups ) ) {
foreach ( $groups as $group ) {
$this->global_groups[ $group ] = true;
}
} else {
$this->global_groups[ $groups ] = true;
}
}
public function add_non_persistent_groups( $groups ) {
if ( is_array( $groups ) ) {
foreach ( $groups as $group ) {
$this->non_persistent_groups[ $group ] = true;
}
} else {
$this->non_persistent_groups[ $groups ] = true;
}
}
public function decr( $key, $offset = 1, $group = 'default' ) {
if ( $offset < 0 ) {
return $this->incr( $key, abs( $offset ), $group );
}
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] - $offset >= 0 ) {
$this->local_cache[ $group ][ $key ] -= $offset;
} else {
$this->local_cache[ $group ][ $key ] = 0;
}
if ( isset( $this->non_persistent_groups[ $group ] ) ) {
return $this->local_cache[ $group ][ $key ];
} else {
$value = apcu_dec( $key, $offset );
if ( $value < 0 ) {
apcu_store( $key, 0 );
return 0;
}
return $value;
}
}
public function delete( $key, $group = 'default', $force = false ) {
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
unset( $this->local_cache[ $group ][ $key ] );
if ( ! isset( $this->non_persistent_groups[ $group ] ) ) {
return apcu_delete( $key );
}
return true;
}
public function flush() {
$this->local_cache = array();
// TODO: only clear our own entries
apcu_clear_cache();
return true;
}
public function get( $key, $group = 'default', $force = false, &$found = null ) {
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( ! $force && isset( $this->local_cache[ $group ][ $key ] ) ) {
$found = true;
if ( is_object( $this->local_cache[ $group ][ $key ] ) ) {
return clone $this->local_cache[ $group ][ $key ];
} else {
return $this->local_cache[ $group ][ $key ];
}
} elseif ( isset( $this->non_persistent_groups[ $group ] ) ) {
$found = false;
return false;
} else {
$value = @apcu_fetch( $key, $found );
if ( $found ) {
if ( $force ) {
$this->local_cache[ $group ][ $key ] = $value;
}
return $value;
} else {
return false;
}
}
}
public function incr2( $key, $offset = 1, $group = 'default' ) {
if ( $offset < 0 ) {
return $this->decr( $key, abs( $offset ), $group );
}
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] + $offset >= 0 ) {
$this->local_cache[ $group ][ $key ] += $offset;
} else {
$this->local_cache[ $group ][ $key ] = 0;
}
if ( isset( $this->non_persistent_groups[ $group ] ) ) {
return $this->local_cache[ $group ][ $key ];
} else if ( function_exists( 'apcu_inc' ) ) {
$value = apcu_inc( $key, $offset );
if ( $value < 0 ) {
apcu_store( $key, 0 );
return 0;
}
return $value;
}
return false;
}
public function replace( $key, $data, $group = 'default', $expire = 0 ) {
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( isset( $this->non_persistent_groups[ $group ] ) ) {
if ( ! isset( $this->local_cache[ $group ][ $key ] ) ) {
return false;
}
} else {
if ( ! isset( $this->local_cache[ $group ][ $key ] ) && ! apcu_exists( $key ) ) {
return false;
}
apcu_store( $key, $data, (int) $expire );
}
if ( is_object( $data ) ) {
$this->local_cache[ $group ][ $key ] = clone $data;
} else {
$this->local_cache[ $group ][ $key ] = $data;
}
return true;
}
public function reset() {
// This function is deprecated as of WordPress 3.5
// Be safe and flush the cache if this function is still used
$this->flush();
}
public function set( $key, $data, $group = 'default', $expire = 0 ) {
$group = $this->get_group( $group );
$key = $this->get_key( $group, $key );
if ( is_object( $data ) ) {
$this->local_cache[ $group ][ $key ] = clone $data;
} else {
$this->local_cache[ $group ][ $key ] = $data;
}
if ( ! isset( $this->non_persistent_groups[ $group ] ) ) {
return apcu_store( $key, $data, (int) $expire );
}
return true;
}
public function stats() {
// Only implemented because the default cache class provides this.
// This method is never called.
echo '';
}
public function switch_to_blog( $blog_id ) {
$this->blog_prefix = $this->multisite ? $blog_id . ':' : '';
}
}
if ( function_exists( 'apcu_inc' ) ) {
class APCu_Object_Cache extends GD_APCu_Object_Cache {
function incr( $key, $offset = 1, $group = 'default' ) {
return parent::incr2( $key, $offset, $group );
}
}
} else {
class APCu_Object_Cache extends GD_APCu_Object_Cache {
// Blank
}
}
endif;
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{"id":2388,"date":"2019-02-01T04:31:17","date_gmt":"2019-02-01T11:31:17","guid":{"rendered":"http:\/\/oldpics.net\/?p=2388"},"modified":"2019-02-01T04:31:18","modified_gmt":"2019-02-01T11:31:18","slug":"worlds-last-commercial-sailing-ship","status":"publish","type":"post","link":"https:\/\/oldpics.net\/worlds-last-commercial-sailing-ship\/","title":{"rendered":"The world\u2019s last commercial sailing ship,the Pamir, rounding Cape Horn for the last time in 1949"},"content":{"rendered":"\n<\/figure>\n\n\n\n
The Pamir, a four-masted\u00a0barque, was built in Hamburg, Germany in 1905. It was used\u00a0in the South American\u00a0nitrate trade. After WWI the sailing ship was handed over to\u00a0Italy\u00a0as\u00a0war reparation and atfer WWII the Pamir\u00a0was seized as a\u00a0prize of war\u00a0by the New Zealand government. In 1950s, German shipowner Heinz Schliewen, who had sailed on her in the late 1920s, bought the Pamir. The sailing ship was modernized and used as cargo-carrying school ship. On 10 August 1957, the Pamir left\u00a0Buenos Aires\u00a0for Hamburg and on 21 of September got caught in\u00a0Hurricane Carrie before shortening sails. After nine days of search only four crewmen and two cadets were rescued alive. As none of the officers nor the captain survived, the reasons for the capsizing remained uncertain. <\/p>\n\n\n\n<\/figure>\n","protected":false},"excerpt":{"rendered":"
The Pamir, a four-masted\u00a0barque, was built in Hamburg, Germany in 1905. It was used\u00a0in the South American\u00a0nitrate trade. After WWI the sailing…<\/p>\n","protected":false},"author":4,"featured_media":2390,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"\n
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