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| <h1 id="overview">Overview</h1> |
| |
| <p>The Dispatch router is an AMQP router that provides advanced interconnect for AMQP. |
| It is <em>not</em> a broker. It will never assume ownership of a message. It will, |
| however, propagate settlement and disposition across a network such that delivery |
| guarantees are met.</p> |
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| <p>The router is meant to be deployed in topologies of multiple routers, preferably with |
| redundant paths. It uses link-state routing protocols and algorithms (similar to OSPF |
| or IS-IS from the networking world) to calculate the best path from every point to |
| every other point and to recover quickly from failures. It does not need to use |
| clustering for high availability; rather, it relies on redundant paths to provide |
| continued connectivity in the face of system or network failure.</p> |
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| <p>A messaging client can make a single AMQP connection into a messaging bus built of |
| Dispatch routers and, over that connection, exchange messages with one or more message |
| brokers, and at the same time exchange messages directly with other endpoints without |
| involving a broker at all.</p> |
| |
| <h2 id="benefits">Benefits</h2> |
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| <h3 id="simplifies-connectivity">Simplifies connectivity</h3> |
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| <ul> |
| <li>An endpoint can do all of its messaging through a single transport connection</li> |
| <li>Avoid opening holes in firewalls for incoming connections</li> |
| </ul> |
| |
| <h3 id="simplifies-reliability">Simplifies reliability</h3> |
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| <ul> |
| <li>Reliability and availability are provided using redundant topology, not server clustering</li> |
| <li>Reliable end-to-end messaging without persistent stores</li> |
| <li>Use a message broker only when you need store-and-forward semantics</li> |
| </ul> |
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| Apache Qpid, Messaging built on AMQP; Copyright © 2015 |
| The Apache Software Foundation; Licensed under |
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