6. Kratos 整体架构 贡献插件 框架核心 组件 Config encoding API Errors Apollo Consul etcd msgpack Config Logger Nacos k8s ... ... Metrics Encoding Metadata Middleware ... 传输层协议 HTTP Log Metrics zap prometheus Consul etcd fluent datadog discovery naocs ... ... k8s ... gRPC Application Registry OpenSergo Aegis 服务可用性算法 circuitbreaker ratelimit 配套工具链 kratos command line Polaris protoc plugins ...