cqrs.puml

@startuml

skinparam component {
    backgroundColor<<Aggregate>> lightBlue
    backgroundColor<<Event handler>> lightGreen
}

skinparam noteFontSize 10

component "Person" <<Aggregate>> as P
database "Person\nschema" as PDB

component "Address" <<Aggregate>> as A
database "Address\nschema" as ADB

queue "Event Bus" as E

queue "Command Bus" as C

queue "Query Bus" as Q

interface "Command\nAPI" as CAPI
interface "Query\nAPI" as QAPI

component "Saga" <<Event handler>> as S
database "Saga\nschema" as SDB

component "Projection" <<Event handler>> as PR
database "Projection\nschema" as PRDB


CAPI -right-> C: "use"

C --down--> P: "dispatch"

C --down--> A: "dispatch"

P -left- PDB: "JPA"

A -right- ADB: "JPA"

P -right-> E: "apply"

E <.left. P: "listen"

A -left-> E: "apply"

A .left.> E: "listen"

S .down.> E: "listen"

S -up-> C: "dispatch"

S -right- SDB: "JPA"

PR .up.> E: "listen"

PR -right- PRDB: "JPA"

Q --up--> A: "query"

Q --up--> P: "query"

Q <-up-> PR: "query"

QAPI -right-> Q: "use"

note left of PR
1..*
denormalized
endnote

note left of S
1..*
workflow
endnote

note right of C
Axon server
infrastructure
endnote

note right of Q
Axon server
infrastructure
endnote


@enduml