Reacting to an Event-Driven World (Kate Stanley & Grace Jansen, IBM) Kafka Summit 2020

4. IBM Event Streams Barista Example: © 2020 IBM Corporation Coffee Shop Coffee Shop Barista Barista Board Coffee Lovers Coffee Lovers HTTP Orders, Queue HTTP HTTP https://github.com/cescoffier/quarkus-coffeeshop-demo Event Backbone

12. IBM Event Streams Events “A signal emitted by a component upon reaching a given state.” © 2020 IBM Corporation A message can contain an encoded event in its payload. Messages “An item of data sent to a specific location.”

13. IBM Event Streams© 2020 IBM Corporation Apache Kafka is an open source, distributed streaming platform Publish and subscribe to streams of records Store records in durable way Process streams of records as they occur

26. IBM Event Streams How do we make a highly responsive app? Microservice 1 © 2020 IBM Corporation Microservice 2 Microservice 3 Futures Reactive Streams Libraries Futures Reactive Streams Libraries Futures Reactive Streams Libraries Reactive Programming

29. IBM Event Streams Reactive Programming © 2020 IBM Corporation A subset of asynchronous programming and a paradigm where the availability of new information drives the logic forward rather than having control flow driven by a thread-of-execution.

44. IBM Event Streams Reactive Streams is a standard and specification for stream-oriented libraries for the JVM that.. © 2020 IBM Corporation …process a potentially unbounded number of elements in sequence… …asynchronously passing elements between components… …with mandatory non-blocking backpressure. App

45. IBM Event Streams Reactive Streams is a standard and specification for stream-oriented libraries for the JVM that.. © 2020 IBM Corporation …process a potentially unbounded number of elements in sequence… …asynchronously passing elements between components… …with mandatory non-blocking backpressure. App …

49. IBM Event Streams MicroProfile 3.3 Stack © 2020 IBM Corporation Reactive Streams Operators 1.1 GraphQL 1.0 Standalone Projects JSON-B 1.0JSON-P 1.1CDI 2.0 Config 1.4 Fault Tolerance 2.1 JWT Propagation 1.1 Health Check 2.2 Metrics 2.3 Open Tracing 1.3 Open API 1.1 JAX-RS 2.1 Rest Client 1.4 Reactive Messaging 1.0 Context Propagation 1.0 Reactive Streams Not a MicroProfile spec

73. IBM Event Streams IBM Event Streams Apache Kafka for the enterprise © 2020 IBM Corporation ibm.biz/aboutEventStreams Powerful Ops Tooling Award Winning User Experience Connector Catalog Support you can Trust Unrivalled MQ connectivity Schema Registry Geo-replication for DR

74. Thank you Grace Jansen | @gracejansen27 Kate Stanley | @katestanley91 © 2020 IBM Corporation IBM Event Streams: ibm.biz/aboutEventStreams Reactive resources: https://www.reactivemanifesto.org https://ibm.biz/GettingStartedWithReactive Getting started with Kafka: https://kafka.apache.org/quickstart https://strimzi.io Reactive Kafka libraries https://vertx.io/docs/vertx-kafka-client/java/ https://github.com/eclipse/microprofile-reactive- messaging https://projectreactor.io/docs/kafka https://github.com/akka/alpakka-kafka

Reacting to an Event-Driven World (Kate Stanley & Grace Jansen, IBM) Kafka Summit 2020

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