@startuml
participant Participant as Foo
actor       Actor       as Foo1
boundary    Boundary    as Foo2
control     Control     as Foo3
entity      Entity      as Foo4
database    Database    as Foo5
collections Collections as Foo6
queue       Queue       as Foo7

Foo -> Foo1 : To actor 
Foo -> Foo2 : To boundary
Foo -> Foo3 : To control
Foo -> Foo4 : To entity
Foo -> Foo5 : To database
Foo -> Foo6 : To collections
Foo -> Foo7 : To queue

' 新增的10行示例
Foo1 -> Foo2 : Actor asks boundary
Foo3 --> Foo4 : Control returns data
Foo5 -> Foo6 : Database syncs collections
Foo7 -> Foo : Queue notifies participant
Foo -> Foo3 : Request processing
Foo3 -> Foo5 : Query database
Foo5 --> Foo3 : Return result
Foo3 -> Foo7 : Push to queue
Foo2 -> Foo4 : Boundary validates entity
Foo4 --> Foo2 : Validation response
@enduml