The document discusses caching strategies in WordPress, including object caching, transients, and page caching. It provides code snippets for implementing caching methods using functions like wp_cache_set and set_transient. Additionally, it mentions various caching plugins such as Memcached, Redis, WP Super Cache, and W3 Total Cache to enhance performance.

1. W ordPress
Kitchen 2014

2. Александр Стриха
alex@pingbull.no

3. Кеш ирование в
W ordPress

15. IsCache = ???

16. IsCache = 1
Money

17. W P_Object_Cache
wp_cache_set( 'key', 'value' );
$value = wp_cache_get( 'key' );

18. function get_free_products_count()
{
if ( false === ( $count = wp_cache_get( 'free-products' ) ) ) {
$count = big query
wp_cache_set( 'free-products', $count );
}
return $count;
}
get_free_products_count(); // SQL
get_free_products_count(); // Cache
get_free_products_count(); // Cache

19. wp-content/object-cache.php
Memcached
https://wordpress.org/plugins/memcached/
Redis
https://github.com/ericmann/Redis-Object-Cache

20. Transients API
set_transient( 'key', 'value', $time );
$value = get_transient( 'key' );

21. if ( false === ( $value = get_transient( 'key' ) ) ) {
$value = wp_remote_get( $url );
set_transient( 'key', $value, DAY_IN_SECONDS );
}

22. if ( false === ( $value = get_transient( 'key' ) ) ) {
$value = BIG QUERY
set_transient( 'key', $value, DAY_IN_SECONDS );
}

23. add_action( 'save_post', function ( $post_id ) {
delete_transient( 'key' );
});

24. if ( false === ( $value = get_transient( 'key' ) ) ) {
ob_start();
get_sidebar();
$value = ob_get_clean();
set_transient( 'key', $value, DAY_IN_SECONDS );
}

25. add_action( 'cron_event', function( ) {
$value = wp_remote_get( $url );
set_transient( 'key', $value, DAY_IN_SECONDS );
});

26. Advanced Cache
wp_cache_postload( );

27. wp-content/advanced-cache.php
define( 'WP_CACHE', true );
WP Super Cache
https://wordpress.org/plugins/wp-super-cache/
W3 Total Cache
https://wordpress.org/plugins/w3-total-cache/
Batcache
https://wordpress.org/plugins/batcache/

28. function wp_cache_postload( ) {
$key = 'page_cache' . $_SERVER[ 'REQUEST_URI' ];
if ( $html = get_transient( $key ) ) {
echo $html;
exit;
}
oobb__start( function( $html ) use ( $key ) {
set_transient( $key, $html, HOUR_IN_SECONDS );
return $html;
});
}

29. Response time (sec)
Clean W P: 99
Object Cache: 116
Full Page Cache: 1

31. KEEP
CALM
AND
USE
CACHE