hello, spring cloud alibaba

.gitignore

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 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+# IDE Files #
+*.iml
+.idea
+.idea/
+.project
+.settings
+target
+

.mvn/jvm.config

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+-Xmx1024m -XX:CICompilerCount=1 -XX:TieredStopAtLevel=1 -Djava.security.egd=file:/dev/./urandom

.mvn/maven.config

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+-DaltSnapshotDeploymentRepository=repo.spring.io::default::https://repo.spring.io/libs-snapshot-local -P spring

.mvn/wrapper/maven-wrapper.properties

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+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.2/apache-maven-3.5.2-bin.zip

README-zh.md

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+# Spring Cloud Alibaba
+
+Spring Cloud Alibaba 致力于提供分布式应用服务开发的一站式解决方案。此项目包含开发分布式应用服务的必需组件，方便开发者通过 Spring Cloud 编程模型轻松使用这些组件来开发分布式应用服务。
+
+依托 Spring Cloud Alibaba，您只需要添加一些注解和少量配置，就可以将 Spring Cloud 应用接入阿里分布式应用解决方案，通过阿里中间件来迅速搭建分布式应用系统。
+
+
+## 主要功能
+
+* **服务限流降级**：默认支持为 HTTP 服务的提供限流保护，也支持添加注解实现方法的自定义限流降级，且支持动态修改限流降级规则。
+
+更多功能请参考 [Roadmap](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/Roadmap-zh.md)。
+
+## 组件:
+
+**[Sentinel](https://github.com/alibaba/Sentinel)**：把流量作为切入点，从流量控制、熔断降级、系统负载保护等多个维度保护服务的稳定性。
+
+更多组件请参考 [Roadmap](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/Roadmap-zh.md)。
+
+## 如何构建
+
+* master 分支对应的是 Spring Boot 2.x，最低支持 JDK 1.8。
+* support_spring_boot_1 分支对应的是 Spring Boot 1.x，最低支持 JDK 1.7。
+
+Spring Cloud 使用 Maven 来构建，最快的使用方式是将本项目clone到本地，然后执行以下命令：
+
+	./mvnw install
+
+执行完毕后，项目将被安装到本地 Maven 仓库。
+
+## 如何使用
+
+为了演示如何使用，Spring Cloud Alibaba 项目包含了一个子模块`spring-cloud-alibaba-examples`。此模块中提供了演示用的 example ，您可以阅读对应的 example 工程下的 readme 文档，根据里面的步骤来体验。
+
+Example 列表：
+
+[sentinel example](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/spring-cloud-alibaba-examples/sentinel-example/readme-zh.md)
+
+
+## 版本管理规范
+项目的版本号格式为 x.x.x 的形式，其中 x 的数值类型为数字，从0开始取值，且不限于 0~9 这个范围。项目处于孵化器阶段时，第一位版本号固定使用0，即版本号为 0.x.x 的格式。
+
+由于 Spring Boot 1 和 Spring Boot 2 在 Actuator 模块的接口和注解有很大的变更，且 spring-cloud-commons 从 1.x.x 版本升级到 2.0.0 版本也有较大的变更，因此我们使用了两个不同分支来分别支持 Spring Boot 1 和 Spring Boot 2:
+* 0.1.x 版本适用于 Spring Boot 1
+* 0.2.x 版本适用于 Spring Boot 2
+
+项目孵化阶段，项目版本升级机制如下：
+* 功能改动的升级会增加第三位版本号的数值，例如 0.1.0 的下一个版本为0.1.1。
+* 如果遇到阻碍主业务流程的 bug，需要进行少量修改进行紧急修复，会出现类似于 0.1.1.fix 这样的版本。我们会尽量完善测试回归流程，避免此类场景出现。
+
+
+
+## 社区交流
+
+### 邮件列表
+
+[email protected]，欢迎通过此邮件列表讨论与 spring-cloud-alibaba 相关的一切。
+
+### QQ 群
+
+QQ群号 294650787

README.md

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-# spring-cloud-alibaba
+# Spring Cloud Alibaba
+
+See the [中文文档](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/README-zh.md) for Chinese readme.
+
+Spring Cloud Alibaba provides a one-stop solution for distributed application development. It contains all the components required to develop distributed applications, making it easy for you to develop your applications using Spring Cloud.
+
+With Spring Cloud Alibaba，you only need to add some annotations and a small amount of configurations to connect Spring Cloud applications to the distributed solutions of Alibaba, and build a distributed application system with Alibaba middleware.
+
+
+## Features
+
+* **Flow control and service degradation**：Flow control for HTTP services is supported by default. You can also customize flow control and service degradation rules using annotations. The rules can be changed dynamically.
+
+For more features, please refer to [Roadmap](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/Roadmap.md).
+
+## Components
+
+**[Sentinel](https://github.com/alibaba/Sentinel)**: Sentinel takes "traffic flow" as the breakthrough point, and provides solutions in areas such as flow control, concurrency, circuit breaking, and load protection to protect service stability.
+
+For more features please refer to [Roadmap](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/Roadmap.md).
+
+## How to build
+
+* **master branch**: Corresponds to Spring Boot 2.x. JDK 1.8 or later versions are supported.
+* **support_spring_boot_1 branch**: Corresponds to Spring Boot 1.x，JDK 1.7 or later versions are supported.
+
+Spring Cloud uses Maven for most build-related activities, and you should be able to get off the ground quite quickly by cloning the project you are interested in and typing:
+
+	./mvnw install
+
+
+## How to use
+
+A `spring-cloud-alibaba-examples` module is included in our project for you to get started with Spring Cloud Alibaba quickly. It contains an example, and you can refer to the readme file in the example project for a quick walkthrough.
+
+Examples：
+
+[Sentinel example](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/spring-cloud-alibaba-examples/sentinel-example/readme.md)
+
+
+## Version control guidelines
+The version number of the project is in the form of x.x.x, where x is a number, starting from 0, and is not limited to the range 0~9. When the project is in the incubator phase, the first version number is fixed to 0, that is, the version number is 0.x.x.
+
+As the interfaces and annotations of Spring Boot 1 and Spring Boot 2 have been changed significantly in the Acutator module, and spring-cloud-commons is also changed quite a lot from 1.x.x to 2.0.0, we maintain two different branches to support Spring Boot 1 and Spring Boot 2:
+* 0.1.x for Spring Boot 1
+* 0.2.x for Spring Boot 2
+
+During the incubation period，the version management of the project will follow these rules：
+* Functional updates will be reflected in the 3rd number of the version, for example, the next version of 0.1.0 will be 0.1.1。
+* Emergency fixes for bugs that block the main business process will be refelected in version numbers such as 0.1.1.fix. However, it is our duty to improve the test regression process to avoid such scnearions.
+
+
+
+## Contact Us
+Mailing list is recommended for discussing almost anything related to spring-cloud-alibaba. 
+
+[email protected]:You can ask questions here if you encounter any problem when using or developing spring-cloud-alibaba.

Roadmap-zh.md

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+# Roadmap
+
+Spring Cloud Alibaba 致力于提供分布式应用服务开发的一站式解决方案。项目包含开发分布式应用服务的必需组件，方便开发者通过 Spring Cloud 编程模型轻松使用这些组件来开发分布式应用服务。
+
+此项目包含的组件内容，主要选取自阿里巴巴开源中间件和阿里云商业化产品，但也不限定于这些产品。
+
+如果您对 Roadmap 有任何建议或想法，欢迎在 issue 中或者通过其他社区渠道向我们提出，一起讨论。
+
+
+## 已包含的组件
+
+**Sentinel**
+阿里巴巴开源项目，把流量作为切入点，从流量控制，熔断降级，系统负载保护等多个维度保护服务的稳定性。
+
+
+## 即将加入的组件
+**Dubbo**
+Apache Dubbo™ (incubating) 是一款高性能Java RPC框架。
+
+**RocketMQ**
+Apache RocketMQ™ 基于Java的高性能、高吞吐量的分布式消息和流计算平台。
+
+**Nacos**
+阿里巴巴开源产品，一个更易于构建云原生应用的动态服务发现、配置管理和服务管理平台。
+
+**Schedulerx**
+阿里中间件团队开发的一款分布式任务调度产品，支持周期性的任务与固定时间点触发任务。
+
+**Aliyun OSS**
+阿里云对象存储服务（Object Storage Service，简称 OSS），是阿里云提供的海量、安全、低成本、高可靠的云存储服务。您可以在任何应用、任何时间、任何地点存储和访问任意类型的数据。
+
+**Aliyun SLS**
+针对日志类数据的一站式服务，在阿里巴巴集团经历大量大数据场景锤炼而成。您无需开发就能快捷完成日志数据采集、消费、投递以及查询分析等功能，提升运维、运营效率，建立 DT 时代海量日志处理能力。

Roadmap.md

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+# Roadmap
+
+See the [中文文档](https://github.com/spring-cloud-incubator/spring-cloud-alibabacloud/blob/master/Roadmap-zh.md) for Chinese Roadmap.
+
+
+Spring Cloud Alibaba provides a one-stop solution for distributed application development. It contains all the components required to develop distributed applications, making it easy for you to develop your applications using Spring Cloud.
+
+This project contains components from both open-source and commercialized Alibaba middleware products，but are not limited to them.
+
+If you have any suggestions on our roadmap, feel free to submit issues or contact us via the other channels.
+
+
+## Components
+
+**Sentinel**
+
+An open-source project of Alibaba, Sentinel takes "flow" as breakthrough point, and provides solutions in areas such as flow control, concurrency, circuit breaking, and load protection to protect service stability.
+
+More components will be supported by Spring Cloud Alibaba in the future, which may include but are not limited to the following: 
+
+**Dubbo**
+Apache Dubbo™ (incubating) is a high-performance, Java based open source RPC framework.
+
+**RocketMQ**
+Apache RocketMQ™ is an open source distributed messaging and streaming data platform.
+
+**Nacos**
+An opensource project of Alibaba, an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.
+
+**Schedulerx**
+A distributed task scheduling product developed by Alibaba Middleware team. It supports both periodical tasks and tasks to be triggered at specified time points.
+
+**Aliyun OSS**
+Aliyun Object Storage Service, An encrypted and secure cloud storage service which stores, processes and accesses massive amounts of data from anywhere in the world.
+
+**Aliyun SLS**
+Aliyun Log Service is an all-in-one service for log-type data. It helps increase Operations & Management and operational efficiency, as well as build the processing capability to deal with massive logs.