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Chapter 1. Overview of AMQ Streams


Red Hat AMQ Streams is a massively-scalable, distributed, and high-performance data streaming platform based on the Apache ZooKeeper and Apache Kafka projects.

The main components comprise:

Kafka Broker

Messaging broker responsible for delivering records from producing clients to consuming clients.

Apache ZooKeeper is a core dependency for Kafka, providing a cluster coordination service for highly reliable distributed coordination.

Kafka Streams API
API for writing stream processor applications.
Producer and Consumer APIs
Java-based APIs for producing and consuming messages to and from Kafka brokers.
Kafka Bridge
AMQ Streams Kafka Bridge provides a RESTful interface that allows HTTP-based clients to interact with a Kafka cluster.
Kafka Connect
A toolkit for streaming data between Kafka brokers and other systems using Connector plugins.
Kafka MirrorMaker
Replicates data between two Kafka clusters, within or across data centers.
Kafka Exporter
An exporter used in the extraction of Kafka metrics data for monitoring.
Kafka Cruise Control
Rebalances a Kafka cluster based on a set of optimization goals and capacity limits.

A cluster of Kafka brokers is the hub connecting all these components. The broker uses Apache ZooKeeper for storing configuration data and for cluster coordination. Before running Apache Kafka, an Apache ZooKeeper cluster has to be ready.

Figure 1.1. AMQ Streams architecture

AMQ Streams architecture

1.1. Kafka capabilities

The underlying data stream-processing capabilities and component architecture of Kafka can deliver:

  • Microservices and other applications to share data with extremely high throughput and low latency
  • Message ordering guarantees
  • Message rewind/replay from data storage to reconstruct an application state
  • Message compaction to remove old records when using a key-value log
  • Horizontal scalability in a cluster configuration
  • Replication of data to control fault tolerance
  • Retention of high volumes of data for immediate access

1.2. Kafka use cases

Kafka’s capabilities make it suitable for:

  • Event-driven architectures
  • Event sourcing to capture changes to the state of an application as a log of events
  • Message brokering
  • Website activity tracking
  • Operational monitoring through metrics
  • Log collection and aggregation
  • Commit logs for distributed systems
  • Stream processing so that applications can respond to data in real time

1.3. Supported Configurations

In order to be running in a supported configuration, AMQ Streams must be running in one of the following JVM versions and on one of the supported operating systems.

Table 1.1. List of supported Java Virtual Machines
Java Virtual MachineVersion

OpenJDK

1.8, 11

OracleJDK

1.8, 11

IBM JDK

1.8

Table 1.2. List of supported Operating Systems
Operating SystemArchitectureVersion

Red Hat Enterprise Linux

x86_64

7.x, 8.x

1.4. Document conventions

Replaceables

In this document, replaceable text is styled in monospace, with italics, uppercase, and hyphens.

For example, in the following code, you will want to replace BOOTSTRAP-ADDRESS and TOPIC-NAME with your own address and topic name:

bin/kafka-console-consumer.sh --bootstrap-server BOOTSTRAP-ADDRESS --topic TOPIC-NAME --from-beginning
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