Update tech_docs/PlantUML.md

tech_docs/PlantUML.md

@@ -307,4 +307,38 @@ class Car {
 ---
 
 ### Conclusion
-PlantUML is a powerful tool for creating a wide range of diagrams, providing a text-based approach to diagramming that is both versatile and integrative. By leveraging these diagrams, you can effectively model, document, and communicate various aspects of a system, from high-level architecture to detailed design.
+PlantUML is a powerful tool for creating a wide range of diagrams, providing a text-based approach to diagramming that is both versatile and integrative. By leveraging these diagrams, you can effectively model, document, and communicate various aspects of a system, from high-level architecture to detailed design.
+
+---
+
+graph TD
+    subgraph Messaging_Infrastructure
+        NATS_Server[NATS Server]
+    end
+
+    subgraph Publishers
+        Publisher_1[Publisher 1]
+        Publisher_2[Publisher 2]
+    end
+
+    subgraph Subscribers
+        Subscriber_1[Subscriber 1]
+        Subscriber_2[Subscriber 2]
+        Subscriber_3[Subscriber 3]
+    end
+
+    subgraph Services
+        Service_A[Service A]
+        Service_B[Service B]
+    end
+
+    Publisher_1 -->|Publish message| NATS_Server
+    Publisher_2 -->|Publish message| NATS_Server
+
+    NATS_Server -->|Distribute message| Subscriber_1
+    NATS_Server -->|Distribute message| Subscriber_2
+    NATS_Server -->|Distribute message| Subscriber_3
+
+    Subscriber_1 -->|Process message| Service_A
+    Subscriber_2 -->|Process message| Service_B
+    Subscriber_3 -->|Process message| Service_A