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Translations: [English](README.md) | [简体中文](README_zh.md)
# Kratos
Kratos 一套轻量级 Go 微服务框架,包含大量微服务相关功能及工具。
> 名字来源于:《战神》游戏以希腊神话为背景,讲述奎托斯(Kratos)由凡人成为战神并展开弑神屠杀的冒险经历。
## Goals
我们致力于提供完整的微服务研发体验,整合相关框架及工具后,微服务治理相关部分可对整体业务开发周期无感,从而更加聚焦于业务交付。对每位开发者而言,整套 Kratos 框架也是不错的学习仓库,可以了解和参考到微服务方面的技术积累和经验。
### Principles
* 简单:不过度设计,代码平实简单;
* 通用:通用业务开发所需要的基础库的功能;
* 高效:提高业务迭代的效率;
* 稳定:基础库可测试性高,覆盖率高,有线上实践安全可靠;
* 健壮:通过良好的基础库设计,减少错用;
* 高性能:性能高,但不特定为了性能做 hack 优化,引入 unsafe ;
* 扩展性:良好的接口设计,来扩展实现,或者通过新增基础库目录来扩展功能;
* 容错性:为失败设计,大量引入对 SRE 的理解,鲁棒性高;
* 工具链:包含大量工具链,比如 cache 代码生成,lint 工具等等;
## Features
* [APIs](https://go-kratos.dev/docs/component/api) :协议通信以 HTTP/gRPC 为基础,通过 Protobuf 进行定义;
* [Errors](https://go-kratos.dev/docs/component/errors/) :通过 Protobuf 的 Enum 作为错误码定义,以及工具生成判定接口;
* [Metadata](https://go-kratos.dev/docs/component/metadata) :在协议通信 HTTP/gRPC 中,通过 Middleware 规范化服务元信息传递;
* [Config](https://go-kratos.dev/docs/component/config) :支持多数据源方式,进行配置合并铺平,通过 Atomic 方式支持动态配置;
* [Logger](https://go-kratos.dev/docs/component/log) :标准日志接口,可方便集成三方 log 库,并可通过 fluentd 收集日志;
* [Metrics](https://go-kratos.dev/docs/component/middleware/metrics) :统一指标接口,可以实现各种指标系统,默认集成 Prometheus;
* [Tracing](https://go-kratos.dev/docs/component/middleware/tracing) :遵循 OpenTelemetry 规范定义,以实现微服务链路追踪;
* [Encoding](https://go-kratos.dev/docs/component/encoding) :支持 Accept 和 Content-Type 进行自动选择内容编码;
* [Transport](https://go-kratos.dev/docs/component/transport/overview) :通用的 [HTTP](https://go-kratos.dev/docs/component/transport/http) /[gRPC](https://go-kratos.dev/docs/component/transport/grpc) 传输层,实现统一的 [Middleware](https://go-kratos.dev/docs/component/middleware/overview) 插件支持;
* [Registry](https://go-kratos.dev/docs/component/registry) :实现统一注册中心接口,可插件化对接各种注册中心;
* [Validation](https://go-kratos.dev/docs/component/middleware/validate): 通过Protobuf统一定义校验规则,并同时适用于HTTP/gRPC服务.
* [SwaggerAPI](https://go-kratos.dev/docs/guide/openapi): 通过集成第三方[Swagger插件](https://github.com/go-kratos/swagger-api) 能够自动生成Swagger API json并启动一个内置的Swagger UI服务.
## Getting Started
### Required
- [go](https://golang.org/dl/)
- [protoc](https://github.com/protocolbuffers/protobuf)
- [protoc-gen-go](https://github.com/protocolbuffers/protobuf-go)
### Installing
##### go install 安装:
```
go install github.com/go-kratos/kratos/cmd/kratos/v2@latest
kratos upgrade
```
##### 源码编译安装:
```
git clone https://github.com/go-kratos/kratos
cd kratos
make install
```
### Create a service
```
# 创建项目模板
kratos new helloworld
cd helloworld
# 拉取项目依赖
go mod download
# 生成proto模板
kratos proto add api/helloworld/helloworld.proto
# 生成proto源码
kratos proto client api/helloworld/helloworld.proto
# 生成server模板
kratos proto server api/helloworld/helloworld.proto -t internal/service
# 生成所有proto源码、wire等等
go generate ./...
# 运行程序
kratos run
```
### Kratos Boot
```
import "github.com/go-kratos/kratos/v2"
import "github.com/go-kratos/kratos/v2/transport/grpc"
import "github.com/go-kratos/kratos/v2/transport/http"
httpSrv := http.NewServer(http.Address(":8000"))
grpcSrv := grpc.NewServer(grpc.Address(":9000"))
app := kratos.New(
kratos.Name("kratos"),
kratos.Version("latest"),
kratos.Server(httpSrv, grpcSrv),
)
app.Run()
```
## Related
* [Docs](https://go-kratos.dev/)
* [Examples](https://github.com/go-kratos/examples)
* [Service Layout](https://github.com/go-kratos/kratos-layout)
## Community
* [Wechat Group](https://github.com/go-kratos/kratos/issues/682)
* [Discord Group](https://discord.gg/BWzJsUJ)
* Website: [go-kratos.dev](https://go-kratos.dev)
* QQ Group: 716486124
## WeChat Official Account
![kratos](docs/images/wechat.png)
## Conventional commits
提交信息的结构应该如下所示:
```text
<type>[optional scope]: <description>
[optional body]
[optional footer(s)]
```
提交信息应按照下面的格式:
- fix: simply describe the problem that has been fixed
- feat(log): simple describe of new features
- deps(examples): simple describe the change of the dependency
- break(http): simple describe the reasons for breaking change
## Sponsors and Backers
![kratos](docs/images/alipay.png)
## License
Kratos is MIT licensed. See the [LICENSE](./LICENSE) file for details.