API网关的常用功能及架构图

API Gateway is a type of service in a microservices architecture which provides a shared layer and API for clients to communicate with internal services. The API Gateway can route requests, transform protocols, aggregate data and implement shared logic like authentication and rate-limiters.

API网关是一种在微服务架构中对外提供统一接口，队内进行内部服务调用的中间层。API网关可以分发路由、转换协议、收集数据、继承通用接口 比如认证、以及限流。

API Gateway as an entry point to microservices

API网关能够实现的功能

1. 统一的认证

   
   Authentication
2. 整合、收集数据
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3. 转换数据格式
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4. 转换协议
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5. 流量限制以及缓存