红帽全球峰会此内容没有您所选择的语言版本。
Chapter 2. Introduction
2.1. JBoss Messaging Features
- A strong focus on performance, reliability and scalability with high throughput and low latency.
- A foundation for JBoss ESB for SOA initiatives. (JBoss ESB uses JBoss Messaging as its default JMS provider.)
- publish-subscribe and point-to-point messaging models;
- persistent and non-persistent messages;
- guaranteed message delivery that ensures messages arrive once and only once where required;
- a transactional and reliable interface that supports ACID semantics;
- a customizable JAAS-based security framework;
- complete integration with JBoss Transactions (previously Arjuna JTA) to support full transaction recovery;
- an extensive JMX management interface;
- support for most major databases, including Oracle, DB2, Sybase, Microsoft SQL Server, PostgreSQL and MySQL;
- HTTP transport, for use with firewalls that allow only HTTP traffic;
- servlet transport to allow messaging through a dedicated servlet;
- SSL transport;
- configurable Dead Letter Queues (DLQs) and Expiry Queues;
- message statistics; which provide a rolling historical view of the messages delivered to queues and subscriptions;
- the automatic paging of messages to storage, which lets you use very large queues that would be too large to fit entirely within system memory; and
- strict message ordering which results in messages belonging to a particular message group being delivered according to the order of their arrival at the target queue.
- Fully-clustered queues and topics
Logical queues and topics are distributed across the cluster. You can send or receive a queue or topic to or from any node on the cluster.
- Fully-clustered durable subscriptions
A particular durable subscription can be accessed from any node of the cluster, letting you spread processing load from that subscription across the entire cluster.
- Fully-clustered temporary queues
If a sent message includes the
replyToof a temporary queue, it can be returned on any node of the cluster. - Intelligent message redistribution
Messages are automatically moved between nodes of the cluster to take advantage of different consumer speeds on different nodes. This helps to prevent starvation or build-up of messages on a particular node.
- Message order protection
Enable this to ensure that the order of messages produced by a producer is identical to the order of messages consumed by a consumer. This works even if message redistribution is active.
- Completely transparent failover
When a server fails, your sessions continue exception-free on a new node. This is also completely configurable: if you do not want to implement this failover behavior, you can disable it and fall back to exceptions being thrown and manually recreating connections on a new node.
- High availability and seamless failover
If the node fails, you will automatically failover to a different node without losing any persistent messages and can seamlessly continue your session. Once and only once delivery of persistent messages is respected at all times.
- Message bridge
JBoss Messaging contains a message bridge component, which lets you bridge messages between any two JMS 1.1 destinations. This lets you connect geographically separate clusters and form large, globally-distributed logical queues and topics.
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}