Update performance.rst

CONTRIBUTORS.rst

@@ -366,6 +366,7 @@ Contributors
 * Jason Dilworth
 * Deniz Dogan
 * Po-Chuan Hsieh
+* scil
 
 Translators
 ===========

docs/advanced_topics/performance.rst

@@ -20,7 +20,9 @@ We recommend `Redis <http://redis.io/>`_ as a fast, persistent cache. Install Re
     CACHES = {
         'default': {
             'BACKEND': 'django_redis.cache.RedisCache',
-            'LOCATION': '127.0.0.1:6379',
+            'LOCATION': 'redis://127.0.0.1:6379/dbname',
+            # for django-redis < 3.8.0, use:
+            # 'LOCATION': '127.0.0.1:6379',
             'OPTIONS': {
                 'CLIENT_CLASS': 'django_redis.client.DefaultClient',
             }