Agrego el método "del($key)" para eliminar elementos de Redis.

Services/RedisService.php

@@ -106,4 +106,18 @@ class RedisService extends Redis implements CollectorInterface
             print_r("SETEX key '{$key}': {$t} segundos" . PHP_EOL);
         }
     }
+
+    /**
+     * @param string|array $key
+     */
+    public function del($key)
+    {
+        if(is_array($key)) {
+            return parent::del($key);
+        } else {
+            return parent::del(array($key));
+        }
+        
+    }
+
 }