getRandomRecommendBooks use redis

app/Modules/Book/Models/BookConfig.php

@@ -718,7 +718,7 @@ class BookConfig extends Model
         }else{
             $channel_name_replace = 'female';
         }
-        $redis_key = sprintf('channel_name:%s:num%s',$channel_name_replace,$num);
+        $redis_key = sprintf('channel_name:%s:num:%s',$channel_name_replace,$num);
         $cache = Redis::get($redis_key);
         if($cache) return explode(',',$cache);
 	    $bids = self::join('books', 'book_configs.bid', '=', 'books.id')