diff --git a/data/apps/common/comm.cfg b/data/apps/common/comm.cfg
index ff46822..98937b6 100644
--- a/data/apps/common/comm.cfg
+++ b/data/apps/common/comm.cfg
@@ -50,4 +50,22 @@
             , "url": "redis://cvtt-tester-01.cvtt.vpn:16379"
         }
    }
+    , "md_cache": {
+        "REDIS_DCKR_COMPOSE": {
+            "type": "redis"
+            , "url": "redis://redis:6379"
+        }
+         , "REDIS_LCLHOST": {
+            "type": "redis"
+            , "url": "redis://localhost:6379"
+        }
+        , "REDIS_LCLHOST_2_DCKR_COMPOSE": {
+            "type": "redis"
+            , "url": "redis://localhost:16379"
+        }
+        , "REDIS_tester-01_2_DCKR_COMPOSE": { # to use docker compose service from outside
+            "type": "redis"
+            , "url": "redis://cvtt-tester-01.cvtt.vpn:16379"
+        }
+   }
 }
\ No newline at end of file