PlantUML example

@startuml
hide footbox
title HANA CDN Service
database HANA
== Initialization ==
CDN -> Kafka: get Last PFCDIK of today
CDN <- Kafka: Last PFCDIK of today
note over CDN: set Last PFCDIK as 0 if no PFCDIK was found for today

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== Poll/Publish delta changes ==
loop every 1 minute
    CDN -> HANA: changes since Last PFCDIK of today
    CDN <- HANA: delta changes
    CDN -> Kafka: publish delta changes to topic
    CDN -> CDN: update local Last PFCDIK of today
end