| <?xml version="1.0" encoding="ISO-8859-1" ?> |
| <!-- |
| ~ Licensed to the Apache Software Foundation (ASF) under one |
| ~ or more contributor license agreements. See the NOTICE file |
| ~ distributed with this work for additional information |
| ~ regarding copyright ownership. The ASF licenses this file |
| ~ to you under the Apache License, Version 2.0 (the |
| ~ "License"); you may not use this file except in compliance |
| ~ with the License. You may obtain a copy of the License at |
| ~ |
| ~ http://www.apache.org/licenses/LICENSE-2.0 |
| ~ |
| ~ Unless required by applicable law or agreed to in writing, |
| ~ software distributed under the License is distributed on an |
| ~ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| ~ KIND, either express or implied. See the License for the |
| ~ specific language governing permissions and limitations |
| ~ under the License. |
| --> |
| |
| <document> |
| |
| <properties> |
| <title>The Lightweight ESB</title> |
| </properties> |
| |
| <body> |
| |
| <section name="Apache Synapse Enterprise Service Bus (ESB)"> |
| <p> |
| Apache Synapse is a lightweight and high-performance Enterprise Service Bus (ESB). Powered |
| by a fast and asynchronous mediation engine, Apache Synapse provides exceptional support |
| for XML, Web Services and REST. In addition to XML and SOAP, Apache Synapse supports |
| several other content interchange formats, such as plain text, binary, Hessian and JSON. The |
| wide range of transport adapters available for Synapse, enables it to communicate over many |
| application and transport layer protocols. As of now, Apache Synapse has support for protocols |
| like HTTP/S, Mail (POP3, IMAP, SMTP), JMS, TCP, UDP, VFS, SMS, XMPP and FIX. |
| </p> |
| <p> |
| Apache Synapse is free and open source software distributed under the |
| <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache Software License 2.0</a>The |
| latest version of Synaspe is <a href="download/2.0/download.cgi">v2.0</a>. This release |
| comes with a horde of new features, bug fixes, performance and stability improvements. |
| </p> |
| <p>Apache Synapse, Synapse, Apache, the Apache feather logo, and the Apache Synapse project logo |
| are trademarks of The <a href="http://www.apache.org">Apache Software Foundation</a>.</p> |
| </section> |
| <section name="New in Version 2.0"> |
| <ul> |
| <li>New, fine-grained configuration model</li> |
| <li>Hot deployment and hot update support for configuration artifacts</li> |
| <li>Priority based mediation support</li> |
| <li>Comprehensive eventing capabilities with WS-Eventing support</li> |
| <li>Secure vault for encrypting passwords in configuration files</li> |
| <li>File locking support in the VFS transport for concurrent polling</li> |
| <li>URLRewrite medaitor for fast and simple URL rewriting</li> |
| <li>Synapse configuration observer API</li> |
| <li>Multiple identity support in the HTTPS transport</li> |
| <li>Enhanced JMX monitoring support for the NHTTP transport</li> |
| <li>Dead letter channel implementation (experimental)</li> |
| <li>Synapse XAR Maven plugin for generating configuration artifacts</li> |
| </ul> |
| </section> |
| <section name="Key Features"> |
| <ul> |
| <li>Proxy services - facilitating transport, interface (WSDL/Schema/Policy), message format (SOAP 1.1/1.2, POX/REST, Text, Binary), QoS (WS-Addressing/WS-Security/WS-RM) and optimization switching (MTOM/SwA)</li> |
| <li>Non-blocking HTTP/S transports for fast HTTP interactions and support for thousands of concurrent connections</li> |
| <li>VFS transport for file manipulation and interaction with FTP, SFTP, CIFS and WEBDAV</li> |
| <li>JMS support for binary, plain text, XML and SOAP payloads</li> |
| <li>Mail transport with extensive support for POP3, IMAP and SMTP</li> |
| <li>Support for industry driven <a href="http://www.fixprotocol.org/">Financial Information eXchange (FIX)</a> protocol</li> |
| <li>Built-in Registry/Repository, facilitating dynamic reloading of the configuration and associated resources (e.g. XSLTs, XSD, JS, ..)</li> |
| <li>Built-in support for scheduling tasks using the <a target="_blank" href="http://www.opensymphony.com/quartz">Quartz</a> scheduler</li> |
| <li>Load-balancing (with or without sticky sessions) and fail-over routing</li> |
| <li>Support for many Web Services standards including WS-Addressing, WS-Security and WS-Reliable Messaging</li> |
| <li>Policy based message throttling and caching (with special support for clustered environments)</li> |
| <li>Message splitting and aggregation</li> |
| <li>Database lookup and update support with database connection pooling</li> |
| <li>Fine grained statistics collection over sequences, endpoints and proxy services</li> |
| <li>JMX monitoring and management</li> |
| <li>Easily extendable with Java, Spring, or BSF Scripting languages (Javascript, Ruby, Groovy, etc.)</li> |
| </ul> |
| </section> |
| <section name="Known Issues"> |
| <p>Except for the issues listed in the Apache Synapse <a href="issue-tracking.html">issue tracker</a> there are following minor issues associated with this release of the Synapse</p> |
| <ul> |
| <li>Sandesha2 build shipped with the Synapse distribution has not been tested extensively |
| and is a custom build, built by the synapse community. Although all the shipped reliable |
| messaging samples are working with this shipped sandesha2 build, it is recommended that |
| you download a compatible Sandesha2 build from the Sandesha2 site if you plan to put any |
| reliable messaging scenario into production.</li> |
| <li>Message store implementation and DLC has not been tested extensively, so use it with |
| care after testing in production if you are planning to use it in production</li> |
| </ul> |
| </section> |
| <section name="Apache Synapse Runtime Architecture"> |
| <p> |
| Apache Synapse is designed to be lightweight and fast. The non-blocking HTTP transport, |
| the multi-threaded mediation engine and the streaming XML infoset combine to ensure that |
| Synapse can mediate very high volumes of messages through the service bus with minimum |
| delay and resource usage. Synapse also comes with comprehensive logging capabilities, |
| statistics collection and JMX monitoring support which are crucial in production deployments. |
| </p> |
| <img src="images/diagram_v2.png" caption="Apache Synapse - Runtime Architecture"/> |
| <p> |
| Synapse uses Apache Axis2 as the underlying Web Services engine. Therefore it has outstanding |
| support for Web Services and related standards such as SOAP and WSDL. Tried and tested |
| Axis2 modules like Apache Rampart and Apache Sandesha2 can be used with Synapse with no |
| configuration overhead. Using such external modules, Apache Synapse supports a range of |
| Web Services standards including WS-Security and WS-Reliable Messaging. Synapse |
| also makes use of the Axis2 clustering framework to provide enteprise grade clustering support. |
| </p> |
| <p> |
| Synapse is configured using a simple, XML-based configuration language. |
| The configuration language and the related functional components are designed with SOA |
| best practices in mind. It is trivial to store configuration fragments in an |
| external SOA registry and import them to the mediation engine on demand. |
| Synapse ships with a large collection of mediators that can be used to implement even the |
| most complex enterprise integration scenarios. If necessary, the mediation engine can be |
| extended by developing custom mediators using Java or your favorite scripting |
| language. |
| </p> |
| </section> |
| </body> |
| </document> |
