RabbitMQ Streams Overview at RabbitMQ Summit 2021

by Arnaud Cogoluègnes

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Conﬁdential │ ©2021 VMware, Inc. The Log Abstraction ● FIFO data structure ● No destructive reading A stream models an append-only log M 0 M 1 M 2 M 3 M 4 M 5 M 6 Oldest message Offset Last message Next message will be inserted here

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Conﬁdential │ ©2021 VMware, Inc. Well-behaved publishers and consumers RabbitMQ node Stream Replica RabbitMQ node Stream Leader RabbitMQ node Stream Replica C C P Consume from replica Publish to leader Consume from replica

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Conﬁdential │ ©2021 VMware, Inc. Streams spread across the cluster RabbitMQ node Stream 1 Leader RabbitMQ node Stream 1 Replica RabbitMQ node Stream 1 Replica Stream 2 Replica Stream 2 Leader Stream 2 Replica Stream 3 Replica Stream 3 Replica Stream 3 Leader

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Conﬁdential │ ©2021 VMware, Inc. Stream Creation with any AMQP 0.9.1 Client channel.queueDeclare( "my-stream", true, // durable false, false, // not exclusive, not auto-delete Collections.singletonMap("x-queue-type", "stream") );

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Conﬁdential │ ©2021 VMware, Inc. Consuming from a Stream with any AMQP 0.9.1 Client channel.basicConsume( "my-stream", false, // not auto-ack Collections.singletonMap("x-stream-offset", 0), (s, delivery) -> { }, // delivery callback s -> { } // cancel callback );

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Conﬁdential │ ©2021 VMware, Inc. 3-node cluster (c2-standard-16 instances) Stream Protocol Publishing Rate (messages / second) 39,000 1,141,754 Quorum Queue Stream with stream protocol 64,600 Stream on AMQP

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Conﬁdential │ ©2021 VMware, Inc. Traditional Routing with AMQP AMQP 0.9.1 Queue Publisher Publisher Publisher Queue Queue << AMER >> << EMEA >> << APAC >> AMER processing EMEA processing APAC processing AMQP 0.9.1 AMQP 0.9.1 (Possibly) multi-protocol publishers

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Conﬁdential │ ©2021 VMware, Inc. Add Stream for Analytics AMQP 0.9.1 Queue Publisher Publisher Publisher Queue Queue << AMER >> << EMEA >> << APAC >> << * >> Stream AMER processing EMEA processing APAC processing World-wide analytics AMQP 0.9.1 AMQP 0.9.1 Stream Protocol (Possibly) multi-protocol publishers

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Conﬁdential │ ©2021 VMware, Inc. Java Client: Stream Management Environment environment = Environment.builder() .build(); environment.streamCreator().stream("my-stream") .create(); environment.deleteStream("my-stream");

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Conﬁdential │ ©2021 VMware, Inc. Java Client: Sending a message Message message = producer.messageBuilder() .addData(messagePayload).build(); producer.send( message, confirmationStatus -> { // confirmation callback });

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Conﬁdential │ ©2021 VMware, Inc. Java Client: Sending a message Consumer consumer = environment.consumerBuilder() .stream("my-stream") .offset(OffsetSpecification.first()) .messageHandler((offset, message) -> { // message processing callback }) .build();

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Conﬁdential │ ©2021 VMware, Inc. Java Client: Conﬁguration-based environment.consumerBuilder() .stream("my-stream") .name("application-1") .autoTrackingStrategy() // offset tracking .builder() .messageHandler((context, message) -> { }) .build();

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Conﬁdential │ ©2021 VMware, Inc. Unlock new scenarios with RabbitMQ Streams: a new replicated and persistent log-type structure in RabbitMQ Large fan-outs Replay / Time travelling High Throughput Large logs Try it!

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Conﬁdential │ ©2021 VMware, Inc. ● Introductory Blog Post ● Stream Java Client Documentation ○ Good starting point, performance tool is included ○ Ongoing development, API stabilization ● Streams Documentation ● Stream Plugin Documentation ● Source code: ○ Stream Plugin ○ Stream Java Client ○ Stream Go Client Documentation & source code Resources

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Conﬁdential │ ©2021 VMware, Inc. ● Introductory Blog Post ○ https://blog.rabbitmq.com/posts/2021/07/rabbitmq-streams-overview/ ● Stream Java Client Documentation ○ Good starting point, performance tool is included ○ Ongoing development, API stabilization ○ https://rabbitmq.github.io/rabbitmq-stream-java-client/stable/htmlsingle/ ● Streams Documentation: https://rabbitmq.com/streams.html ● Stream Plugin Documentation: https://rabbitmq.com/stream.html ● Source code: ○ Stream Plugin: https://github.com/rabbitmq/rabbitmq-server/tree/master/deps/rabbitmq_stream ○ Stream Java Client: https://github.com/rabbitmq/rabbitmq-stream-java-client ○ Stream Go Client: https://github.com/rabbitmq/rabbitmq-stream-go-client Documentation & source code Resources

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