gistfile1.txt

  $post_type_taxonomies = array();
	$term_ids             = array();
  $prime_post_terms     = array();
	foreach ( $posts as $post ) {
		if ( ! ( $post instanceof WP_Post ) ) {
			continue;
		}

		if ( ! isset( $post_type_taxonomies[ $post->post_type ] ) ) {
			$post_type_taxonomies[ $post->post_type ] = get_object_taxonomies( $post->post_type );
		}
    
    foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
       $prime_post_terms[ $taxonomy ][] = $post->ID;
    }
  }
  
  foreach( $prime_post_terms as $taxonomy => $post_ids ){
     wp_cache_get_multiple( $post_ids, "{$taxonomy}_relationships" );
  }
  
  foreach ( $posts as $post ) {
		foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
			// Term cache should already be primed by `update_post_term_cache()`.
			$terms = get_object_term_cache( $post->ID, $taxonomy );
			if ( false !== $terms ) {
				foreach ( $terms as $term ) {
					if ( ! in_array( $term->term_id, $term_ids, true ) ) {
						$term_ids[] = $term->term_id;
					}
				}
			}
		}
	}