@startuml skinparam backgroundColor #f5efe2 skinparam shadowing false skinparam class { BackgroundColor #fdfaf0 BorderColor #b8a982 ArrowColor #6e5d3d FontName "Helvetica" } skinparam note { BackgroundColor #f0e3c4 BorderColor #b8a982 } hide empty members class "EventStream" as eventstream_system <<system>> #2c4a6b class "Producer" as producer <<actor>> class "Consumer" as consumer <<actor>> class "Event Data" as event_data <<block>> class "Wire-compatible with Kafka producer protocol for migration safety" as kafka_wire_compatibility <<constraint>> { } class "Single binary, single config file, runs on a single node up to 100k events/sec" as single_deployment <<constraint>> { } class "Apache 2.0 license" as apache_license <<constraint>> { } producer --> eventstream_system : publishes_events_to consumer --> eventstream_system : subscribes_to_streams_from eventstream_system *-- event_data : transports kafka_wire_compatibility ..> eventstream_system : applies_to single_deployment ..> eventstream_system : applies_to apache_license ..> eventstream_system : applies_to legend right **Requirements** **REQ-001** — Producers must receive backpressure signals as a first-class part of the protocol. **REQ-002** — Consumer-driven flow control must be the default operational mode. endlegend @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art