| ## Apache RocketMQ [](https://travis-ci.org/apache/rocketmq) [](https://coveralls.io/github/apache/rocketmq?branch=master) |
| [](http://search.maven.org/#search%7Cga%7C1%7Corg.apache.rocketmq) |
| [](https://rocketmq.apache.org/dowloading/releases) |
| [](https://www.apache.org/licenses/LICENSE-2.0.html) |
| |
| **[Apache RocketMQ](https://rocketmq.apache.org) is a distributed messaging and streaming platform with low latency, high performance and reliability, trillion-level capacity and flexible scalability.** |
| |
| It offers a variety of features: |
| |
| * Pub/Sub messaging model |
| * Financial grade transactional message |
| * A variety of cross language clients, such as Java, C/C++, Python, Go |
| * Pluggable transport protocols, such as TCP, SSL, AIO |
| * Inbuilt message tracing capability, also support opentracing |
| * Versatile big-data and streaming ecosytem integration |
| * Message retroactivity by time or offset |
| * Reliable FIFO and strict ordered messaging in the same queue |
| * Efficient pull&push consumption model |
| * Million-level message accumulation capacity in a single queue |
| * Multiple messaging protocols like JMS and OpenMessaging |
| * Flexible distributed scale-out deployment architecture |
| * Lightning-fast batch message exchange system |
| * Various message filter mechanics such as SQL and Tag |
| * Docker images for isolated testing and cloud isolated clusters |
| * Feature-rich administrative dashboard for configuration, metrics and monitoring |
| * Authentication and authorization |
| * Free open source connectors, for both sources and sinks |
| |
| ---------- |
| |
| ## Learn it & Contact us |
| * Mailing Lists: <https://rocketmq.apache.org/about/contact/> |
| * Home: <https://rocketmq.apache.org> |
| * Docs: <https://rocketmq.apache.org/docs/quick-start/> |
| * Issues: <https://github.com/apache/rocketmq/issues> |
| * Rips: <https://github.com/apache/rocketmq/wiki/RocketMQ-Improvement-Proposal> |
| * Ask: <https://stackoverflow.com/questions/tagged/rocketmq> |
| * Slack: <https://rocketmq-invite-automation.herokuapp.com/> |
| |
| |
| ---------- |
| |
| ## Apache RocketMQ Community |
| * [RocketMQ Community Projects](https://github.com/apache/rocketmq-externals) |
| ---------- |
| |
| ## Contributing |
| We always welcome new contributions, whether for trivial cleanups, [big new features](https://github.com/apache/rocketmq/wiki/RocketMQ-Improvement-Proposal) or other material rewards, more details see [here](http://rocketmq.apache.org/docs/how-to-contribute/). |
| |
| ---------- |
| ## License |
| [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html) Copyright (C) Apache Software Foundation |
| |
| |
| ---------- |
| ## Export Control Notice |
| This distribution includes cryptographic software. The country in which you currently reside may have |
| restrictions on the import, possession, use, and/or re-export to another country, of encryption software. |
| BEFORE using any encryption software, please check your country's laws, regulations and policies concerning |
| the import, possession, or use, and re-export of encryption software, to see if this is permitted. See |
| <http://www.wassenaar.org/> for more information. |
| |
| The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this |
| software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software |
| using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache |
| Software Foundation distribution makes it eligible for export under the License Exception ENC Technology |
| Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for |
| both object code and source code. |
| |
| The following provides more details on the included cryptographic software: |
| |
| This software uses Apache Commons Crypto (https://commons.apache.org/proper/commons-crypto/) to |
| support authentication, and encryption and decryption of data sent across the network between |
| services. |
