Go语言API网关：统一入口与路由
1. API网关概述
API网关作为微服务的统一入口，提供路由、认证、限流等功能。
2. 网关实现
package gateway import ( "github.com/gin-gonic/gin" ) type Gateway struct { router *gin.Engine services map[string]*ServiceConfig } type ServiceConfig struct { URL string Routes []Route } type Route struct { Path string Method string Target string } func NewGateway() *Gateway { return &Gateway{ router: gin.Default(), services: make(map[string]*ServiceConfig), } } func (g *Gateway) AddService(name string, config *ServiceConfig) { g.services[name] = config } func (g *Gateway) Build() *gin.Engine { for name, svc := range g.services { group := g.router.Group("/" + name) for _, route := range svc.Routes { group.Handle(route.Method, route.Path, func(c *gin.Context) { c.Redirect(http.StatusMovedPermanently, svc.URL+route.Target) }) } } return g.router }3. 总结
API网关是微服务架构的核心组件，可以简化客户端调用，统一处理横切关注点。
