diff --git a/selfprivacy_api/graphql/queries/system.py b/selfprivacy_api/graphql/queries/system.py
index 112fa8c..cc30fd7 100644
--- a/selfprivacy_api/graphql/queries/system.py
+++ b/selfprivacy_api/graphql/queries/system.py
@@ -136,7 +136,7 @@ def get_system_provider_info() -> SystemProviderInfo:
     with ReadUserData() as user_data:
         return SystemProviderInfo(
             provider=user_data["server"]["provider"],
-            id="UNKNOWN"
+            id="UNKNOWN",
         )
 
 
diff --git a/selfprivacy_api/utils/redis_pool.py b/selfprivacy_api/utils/redis_pool.py
index a87049c..2f2cf21 100644
--- a/selfprivacy_api/utils/redis_pool.py
+++ b/selfprivacy_api/utils/redis_pool.py
@@ -3,6 +3,7 @@ Redis pool module for selfprivacy_api
 """
 import redis
 from selfprivacy_api.utils.singleton_metaclass import SingletonMetaclass
+from os import environ
 
 REDIS_SOCKET = "/run/redis-sp-api/redis.sock"
 
@@ -13,10 +14,18 @@ class RedisPool(metaclass=SingletonMetaclass):
     """
 
     def __init__(self):
-        self._pool = redis.ConnectionPool.from_url(
-            f"unix://{REDIS_SOCKET}",
-            decode_responses=True,
-        )
+        if "USE_REDIS_PORT" in environ.keys():
+            self._pool = redis.ConnectionPool(
+                host="127.0.0.1",
+                port=int(environ["USE_REDIS_PORT"]),
+                decode_responses=True,
+            )
+
+        else:
+            self._pool = redis.ConnectionPool.from_url(
+                f"unix://{REDIS_SOCKET}",
+                decode_responses=True,
+            )
         self._pubsub_connection = self.get_connection()
 
     def get_connection(self):
diff --git a/shell.nix b/shell.nix
index b6d8e32..4589192 100644
--- a/shell.nix
+++ b/shell.nix
@@ -64,9 +64,14 @@ pkgs.mkShell {
   buildInputs = [
     sp-python
     pkgs.black
+    pkgs.redis
   ];
   shellHook = ''
     PYTHONPATH=${sp-python}/${sp-python.sitePackages}
+    # envs set with export and as attributes are treated differently.
+    # for example. printenv <Name> will not fetch the value of an attribute.
+    export USE_REDIS_PORT=6379
+    redis-server --port $USE_REDIS_PORT >/dev/null & 
     # maybe set more env-vars
   '';
 }