Server Sent Events using Reactive Kafka and Spring Web flux | Gagan Solur Venkatesh, Egen Solutions Inc
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The document discusses how to implement real-time data communication in applications using server-sent events (SSE) alongside Spring WebFlux and Reactor Kafka. It highlights the differences between polling and push methods for data updates and presents use cases such as e-commerce and live sports updates. The session includes a demonstration and encourages questions from participants.
Server Sent Events using Reactive Kafka and Spring Web flux | Gagan Solur Venkatesh, Egen Solutions Inc
- 1. https://www.kafka-summit.org/ Server-Sent Events Using Reactive Kafkaand Spring WebFlux
- 2. https://www.kafka-summit.org/ GaganSolur Venkatesh Senior Software Engineer Chicago, USA
- 3. https://www.kafka-summit.org/ Content • What are we trying to solve? • Options: Polling vs Websockets vs SSEs • Spring WebFlux and Reactor Kafka • Demo • Questions
- 4. https://www.kafka-summit.org/ • To build real-time applications we always need to consider how we are going to send data from the server to the client. • Two approaches are available where: • Both the clients and the server want to send data. • Only server want to send data to the clients. • Use Cases: • E-Commerce Systems (Web, Mobile, POS, Delivery) • Live Stock Market Updates • Live Sports Score Updates • News Alerts • In-app notifications Appsthatreceiveupdatesinreal-time What are we trying to solve? Image: https://geekandpoke.typepad.com/geekandpoke/2009/02/before-realtime-was-born.html
- 5. https://www.kafka-summit.org/ Client requests server for updates at regular intervals: • Polling or Long Polling ClientPull CommonApproaches Server pushes updates proactively to the registered or subscribed clients: • Web Sockets • Server-Sent Events (SSEs) ServerPush Clients Server Clients Server
- 9. https://www.kafka-summit.org/ • A fully asynchronous and non-blocking reactive web stack. • https://spring.io/reactive Spring Web Flux Server-Sent Events • Reactor Kafka is a reactive API for Kafka based on Project Reactor. • https://projectreactor.io Reactor Kafka
- 10. https://www.kafka-summit.org/ Server-Sent Events Mom’s Pizza: Receives orders online and then pushes the orders to the stores’ POS systems.