Ref #11 added some UML

analysis/05-Message_Queue_Partitioning/example/uml/queue_splitting.plantuml

@@ -0,0 +1,39 @@
+@startuml
+
+left to right direction
+skinparam linetype ortho
+skinparam shadowing false
+
+package "Before Partition" {
+    rectangle "A\nretry = false" as A
+    rectangle "B\nretry = true" as B
+    rectangle "C\nretry = false" as C
+    rectangle "D\nretry = true" as D
+
+    A --> B : next
+    B --> C : next
+    C --> D : next
+}
+
+package "After Partition" {
+    package "Ready Queue" {
+        rectangle "A" as ReadyA
+        rectangle "C" as ReadyC
+
+        ReadyA --> ReadyC : next
+    }
+
+    package "Retry Queue" {
+        rectangle "B" as RetryB
+        rectangle "D" as RetryD
+
+        RetryB --> RetryD : next
+    }
+}
+
+A ..> ReadyA : move
+B ..> RetryB : move
+C ..> ReadyC : move
+D ..> RetryD : move
+
+@enduml