Redis Product Cache

Wordpress Redis Cache for innoshop Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. Redis provides data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes, and streams. Redis has built-in replication, Lua scripting, LRU eviction, transactions, and different levels of on-disk persistence, and provides high availability via Redis Sentinel and automatic partitioning with Redis Cluster.

Installation

For detailed installation instructions, please read the standard installation procedure for WordPress plugins.

1. Make sure Redis is installed and running.
2. Install and activate plugin.
3. Enable the object cache under Settings -> Redis, or in Multisite setups under Network Admin -> Settings -> Redis.
4. If necessary, adjust connection parameters.

If your server doesn't support the WordPress Filesystem API, you have to manually copy the object-cache.php file from the /plugins/redis-cache/includes/ directory to the /wp-content/ directory.

Connection Parameters

By default the object cache drop-in will connect to Redis over TCP at 127.0.0.1:6379 and select database 0.

To adjust the connection parameters, client, timeouts and intervals, please see the connection parameters wiki page.

Configuration Options

The plugin comes with quite a few configuration options, such as key prefixes, a maximum time-to-live for keys, ignored group and many more.

More Details

private static $redis_host = '127.0.0.1';  
private static $redis_port = 6379;  
private static $redis_db = 0;  
private static $redis_auth = '';  
private static $redis_persistent = false;

here's the authentication for redis server

public static function clear_cache_by_product_id ( $product_id, $expire = true ) {  
  $product = wc_get_product( $product_id );  
   $home    = get_option( 'home' );  

   self::clear_cache_by_url( array(  
  trailingslashit( $home ),  
      $home,  
   ), $expire );  

   self::clear_cache_by_flag( array(  
  sprintf( 'product:%d:%d', $product, $product_id ),  
   ), $expire );  
}

Clear cache by product id

public static function clean_product_cache ( $product_id ){  
  $product = wc_get_product( $product_id );  
      if ( empty( $product->get_status ) || $product->get_status != 'publish' ) {  
  return;  
      }  
//    self::clear_cache_by_flag( 'product' );  
  self::clear_cache_by_product_id( $product_id, false);  
   }

Clear product cache after editing or modifying the product

public static function template_redirect() {  
//    Get Current Post id  
  $blog_id = get_current_blog_id();  
//    Get Current Product id  
  $product_id = wc_get_product()->get_id();  

      if ( is_singular() ) {  
  self::flag( sprintf( 'post:%d:%d', $blog_id, get_queried_object_id() ) );  
      }  

  if ( is_feed() ) {  
  self::flag( sprintf( 'feed:%d', $blog_id ) );  
      }  

  if ( is_woocommerce() || has_tag('product') ) {  
  self::flag( sprintf( 'product:%d:%d', $product_id, get_queried_object_id() ) );  
      }  
 }