diff --git a/poc-datacollector/modules/ROOT/images/swarm-poc1.png b/poc-datacollector/modules/ROOT/images/swarm-poc1.png
new file mode 100644
index 0000000..f629234
Binary files /dev/null and b/poc-datacollector/modules/ROOT/images/swarm-poc1.png differ
diff --git a/poc-datacollector/modules/ROOT/pages/index-structure.adoc b/poc-datacollector/modules/ROOT/pages/index-structure.adoc
index 02ae791..da21271 100644
--- a/poc-datacollector/modules/ROOT/pages/index-structure.adoc
+++ b/poc-datacollector/modules/ROOT/pages/index-structure.adoc
@@ -88,12 +88,13 @@ image::ROOT:gynamic-swarm.png[320,540,float=right]
 {empty} 
 --
 
+== Datacollector structure
 
 
 [.float-group]
 --
 [.right]
-image::ROOT:docker-images.png[210,260,float=right]
+image::ROOT:swarm-poc1.png[210,260,float=right]
 
 :hardbreaks:
 
@@ -103,11 +104,27 @@ image::ROOT:docker-images.png[210,260,float=right]
 
 :!hardbreaks:
 
-* (1)  Opens the info  menu 
-* (2)  Run a shell in a running container
-* (3)  Opens web interface
-* (4),(5)  Source directory -  Directory Maps
+* (red)   Redisserver
+
+** redis sync for readmongo_service and dummy_service
+
+* (blue)  readmongo_service 
+
+** reads data from mongodb (Rest api)
+
+*** 1. Webclient -> readmongo_service
+
+*** 2. readmongo_service <- mongo
+
+*** 3. webclient <- readmongo_service
+
+** reads data from mongodb (socket)
+
+*** Webclient <--> readmongo_service <--> redis <--> readmongo_service <--> mongo
+
+* (green) dummy_service
 
+** IoT devive or App -> mongo
 
 {empty} +
 --