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Chapter 1. Overview
AMQ JMS is a Java Message Service (JMS) 2.0 client for use in messaging applications that send and receive AMQP messages.
AMQ JMS is part of AMQ Clients, a suite of messaging libraries supporting multiple languages and platforms. For an overview of the clients, see AMQ Clients Overview. For information about this release, see AMQ Clients 2.6 Release Notes.
AMQ JMS is based on the JMS client from Apache Qpid. For more information about the JMS API, see the JMS API reference.
1.1. Key features
- JMS 1.1 and 2.0 compatible
- SSL/TLS for secure communication
- Flexible SASL authentication
- Automatic reconnect and failover
Distributed tracing based on the OpenTracing standard
ImportantDistributed tracing in AMQ Clients is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process. For more information about the support scope of Red Hat Technology Preview features, see https://access.redhat.com/support/offerings/techpreview/.
- Ready for use with OSGi containers
- Pure-Java implementation
AMQ JMS does not currently support distributed transactions (XA). If your application requires distributed transactions, it is recommended that you use the AMQ Core Protocol JMS client.
1.2. Supported standards and protocols
AMQ JMS supports the following industry-recognized standards and network protocols:
- Version 2.0 of the Java Message Service API
- Version 1.0 of the Advanced Message Queueing Protocol (AMQP)
- Version 1.0 of the AMQP JMS Mapping
- Versions 1.0, 1.1, 1.2, and 1.3 of the Transport Layer Security (TLS) protocol, the successor to SSL
- Simple Authentication and Security Layer (SASL) mechanisms including ANONYMOUS, PLAIN, SCRAM, EXTERNAL, and GSSAPI (Kerberos)
- Modern TCP with IPv6
1.3. Supported configurations
AMQ JMS supports the following OS and language versions:
Red Hat Enterprise Linux 6, 7, and 8 with the following JDKs:
- OpenJDK 8 and 11
- Oracle JDK 8
- IBM JDK 8
- HP-UX 11i with HP-UX JVM 8
- IBM AIX 7.1 with IBM JDK 8
- Oracle Solaris 10 and 11 with Oracle JDK 8
- Microsoft Windows 10 Pro with Oracle JDK 8
- Microsoft Windows Server 2012 R2 and 2016 with Oracle JDK 8
AMQ JMS is supported in combination with the following AMQ components and versions:
- All versions of AMQ Broker
- All versions of AMQ Interconnect
- All versions of AMQ Online
- A-MQ 6 versions 6.2.1 and higher
For more information, see Red Hat AMQ 7 Supported Configurations.
1.4. Terms and concepts
This section introduces the core API entities and describes how they operate together.
| Entity | Description |
|---|---|
|
| An entry point for creating connections. |
|
| A channel for communication between two peers on a network. It contains sessions. |
|
| A context for producing and consuming messages. It contains message producers and consumers. |
|
| A channel for sending messages to a destination. It has a target destination. |
|
| A channel for receiving messages from a destination. It has a source destination. |
|
| A named location for messages, either a queue or a topic. |
|
| A stored sequence of messages. |
|
| A stored sequence of messages for multicast distribution. |
|
| An application-specific piece of information. |
AMQ JMS sends and receives messages. Messages are transferred between connected peers using message producers and consumers. Producers and consumers are established over sessions. Sessions are established over connections. Connections are created by connection factories.
A sending peer creates a producer to send messages. The producer has a destination that identifies a target queue or topic at the remote peer. A receiving peer creates a consumer to receive messages. Like the producer, the consumer has a destination that identifies a source queue or topic at the remote peer.
A destination is either a queue or a topic. In JMS, queues and topics are client-side representations of named broker entities that hold messages.
A queue implements point-to-point semantics. Each message is seen by only one consumer, and the message is removed from the queue after it is read. A topic implements publish-subscribe semantics. Each message is seen by multiple consumers, and the message remains available to other consumers after it is read.
See the JMS tutorial for more information.
1.5. Document conventions
This document uses the following conventions for the sudo command and file paths.
The sudo command
In this document, sudo is used for any command that requires root privileges. You should always exercise caution when using sudo, as any changes can affect the entire system.
For more information about using sudo, see The sudo Command.
About the use of file paths in this document
In this document, all file paths are valid for Linux, UNIX, and similar operating systems (for example, /home/...). If you are using Microsoft Windows, you should use the equivalent Microsoft Windows paths (for example, C:\Users\...).
