diff --git a/components/entitiy_ident/entity_ident.py b/components/entitiy_ident/entity_ident.py
index 7dde0d3..c8270aa 100644
--- a/components/entitiy_ident/entity_ident.py
+++ b/components/entitiy_ident/entity_ident.py
@@ -1,6 +1,8 @@
 from flask import Flask
 from flask_pymongo import PyMongo
 
+# make sure mongoDB (container) is running and accessible
+
 # see https://flask-pymongo.readthedocs.io/en/latest/
 
 app = Flask(__name__)
diff --git a/components/event_store/event_store.py b/components/event_store/event_store.py
index 07f143c..3b620c2 100644
--- a/components/event_store/event_store.py
+++ b/components/event_store/event_store.py
@@ -1,6 +1,8 @@
 from flask import Flask
 from flask_redis import Redis
 
+# make sure redis (container) is running and accessible
+
 # see https://flask-and-redis.readthedocs.io/en/latest/
 # see https://github.com/andymccurdy/redis-py
 
@@ -12,10 +14,11 @@ redis = Redis(app)
 
 @app.route("/")
 def home_page():
-    redis.set('foo', 'bar')
-    print(redis.get('foo'))
+    redis.set('tl1', 'sending change red -> green <br>')
+    redis.append('tl1', 'sending change green -> red <br>')
+    redis.set('v1', 'receiving vel 100 km/h <br>')
 
-    return 'redis works'
+    return redis.get('tl1') + redis.get('v1')
 
 
 if __name__ == '__main__':