diff --git a/main.go b/main.go
index df5e066..5cd001f 100644
--- a/main.go
+++ b/main.go
@@ -12,7 +12,6 @@ import (
 	"os/signal"
 	"path/filepath"
 	"syscall"
-	"time"
 
 	"modelRT/alert"
 	"modelRT/config"
@@ -22,7 +21,6 @@ import (
 	_ "modelRT/docs"
 	"modelRT/handler"
 	"modelRT/logger"
-	"modelRT/middleware"
 	"modelRT/model"
 	"modelRT/pool"
 	realtimedata "modelRT/real-time-data"
@@ -36,12 +34,6 @@ import (
 	"gorm.io/gorm"
 )
 
-var limiter *middleware.Limiter
-
-func init() {
-	limiter = middleware.NewLimiter(10, 1*time.Minute) // 设置限流器，允许每分钟最多请求10次
-}
-
 var (
 	modelRTConfigDir  = flag.String("modelRT_config_dir", "./configs", "config file dir of model runtime service")
 	modelRTConfigName = flag.String("modelRT_config_name", "config", "config file name of model runtime service")
@@ -191,7 +183,7 @@ func main() {
 	engine.GET("/rt/datas/query", handler.QueryRealTimeDataHandler)
 
 	// dashborad api
-	dashboard := engine.Group("/dashboard", limiter.Middleware)
+	dashboard := engine.Group("/dashboard")
 	{
 		dashboard.GET("/load", nil)
 		dashboard.GET("/query", nil)
diff --git a/router/measurement.go b/router/measurement.go
index 276b351..3d94078 100644
--- a/router/measurement.go
+++ b/router/measurement.go
@@ -3,15 +3,14 @@ package router
 
 import (
 	"modelRT/handler"
-	"modelRT/middleware"
 
 	"github.com/gin-gonic/gin"
 )
 
 // registerMeasurementRoutes define func of register measurement routes
-func registerMeasurementRoutes(rg *gin.RouterGroup, clientToken string) {
+func registerMeasurementRoutes(rg *gin.RouterGroup, middlewares ...gin.HandlerFunc) {
 	g := rg.Group("/measurement/")
-	g.Use(middleware.SetTokenMiddleware(clientToken))
+	g.Use(middlewares...)
 	g.GET("load", handler.MeasurementGetHandler)
 	g.GET("recommend", handler.MeasurementRecommendHandler)
 }
diff --git a/router/router.go b/router/router.go
index 24dee32..d91f7a2 100644
--- a/router/router.go
+++ b/router/router.go
@@ -9,20 +9,21 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-var limiter *middleware.Limiter
+var measurementLimiter *middleware.Limiter
 
 func init() {
-	limiter = middleware.NewLimiter(10, 1*time.Minute) // 设置限流器，允许每分钟最多请求10次
+	// set a rate limiter to allow a maximum of 2 requests per second for measurement group api
+	measurementLimiter = middleware.NewLimiter(2, 1*time.Second)
 }
 
 // RegisterRoutes define func of register all routes
 func RegisterRoutes(engine *gin.Engine, clientToken string) {
 	// use global middlewares
-	engine.Use(middleware.StartTrace(), limiter.Middleware)
+	engine.Use(middleware.StartTrace())
 	routeGroup := engine.Group("")
 	registerDiagramRoutes(routeGroup)
 	registerAttrRoutes(routeGroup)
-	registerMeasurementRoutes(routeGroup, clientToken)
+	registerMeasurementRoutes(routeGroup, middleware.SetTokenMiddleware(clientToken), measurementLimiter.Middleware)
 	registerDataRoutes(routeGroup)
 	registerMonitorRoutes(routeGroup)
 }