# Spring Cloud Tencent

Spring Cloud Tencent contains components distributed micro-service applications need during developing phase, developers that built their key architectures based on Spring Cloud can use these components

Based on Spring Cloud Tencent, you only need a small configuration to launch Spring Cloud and micro-service's joint solutions.

## Key Features

* **Service Registration and Discovery**：Based on Spring Cloud's discovery and registration standard.
* **Service Routing and LoadBalancer**：Based on ribbon's API port, provide dynamic routing and load balancing use cases.
* **CircuitBreaker Node**：Support circuitbreak's auto-reset ability, ensure the reliability of distributed server
* **Rate Limiter**：Support rate limit between microservice and access layer, ensure the stability of backend, one can configure policies and traffic data from the control panel

## Component

**[Polaris](https://github.com/polarismesh)**：Polaris Spring Cloud operation centre, provide solutions to registration, dynamic routing, load balancing and circuitbreaker.

## How to build

* master's branch matches Spring Cloud Hoxton, support lowest at JDK 1.8.

Spring Cloud Tencent uses Maven to construct, the fastest way is to cone project to local files, then execute the following orders:

```bash
./mvnw install
```

When all the steps are finished, the project will be installed in local Maven repository.

## How to Use

### How to Introduce Dependency

Add the following configurations n dependencyManagement, then add the dependencies you need.

````
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.tencent.cloud</groupId>
                <artifactId>spring-cloud-tencent-dependencies</artifactId>
                <!--version number-->
                <version>${version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
````

### Example

Spring Cloud Tencent project contains a sub-module spring-cloud-tencent-examples. This module provides examples for users to experience, you can read the README.md in each example, and follow the instructions there.

Example List:

- [Polaris Discovery Example](spring-cloud-tencent-examples/polaris-discovery-example/README.md)

- [Polaris CircuitBreaker Example](spring-cloud-tencent-examples/polaris-circuitbreaker-example/README.md)

- [Polaris RateLimit Example](spring-cloud-tencent-examples/polaris-ratelimit-example/README.md)

### Version Standard

We use a version policy related to Spring Cloud's major version number.

Project version includes ```${MAJOR_VERSION}.${MINOR_VERSION}.${PATCH_VERSION}.${CORRESPONDING_VERSION_OF_SPRING_CLOUD}.${RELEASE_TYPE}```.
```${MAJOR_VERSION}```, ```${MINOR_VERSION}```, ```${PATCH_VERSION}``` are in numbers starting from 0. This project is in the incubating phase, so the major version is set to 0.
```${CORRESPONDING_VERSION_OF_SPRING_CLOUD}``` is the same as the version number of Spring Cloud, like Hoxton, Greenwich.
```${RELEASE_TYPE}``` will be like RELEASE, RC and BETA. 

For example: 0.1.0.Hoxton.BETA

## License
The spring-cloud-tencent is licensed under the BSD 3-Clause License. Copyright and license information can be found in the file [LICENSE](LICENSE)