$cache = new Memcached(); $cache->addServer('localhost', 11211); $key = 'my_table'; // Retrieve the cached table $table = $cache->get($key); // Update the cached table $table['row1']['column2'] = 'new value'; $table['row2']['column3'] = 100; // Update the cached table in memory $cache->set($key, $table);In this example, we first create a new Memcached object and add a server to connect to. We then retrieve a cached table using the key 'my_table'. We update two values in the table and then update the cached table in memory. The UpdateCache function is very useful for updating cached tables on the fly without having to rebuild the entire cache. This can result in significant performance improvements for applications that rely heavily on cached data.