diff --git a/Gopkg.lock b/Gopkg.lock
index e2147da..f6cf32b 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -39,17 +39,8 @@
 [[projects]]
   name = "github.com/xiaojiaoyu100/cast"
   packages = ["."]
-  revision = "9b2d9b934d63eb190975fdf9bc603d16b1ae7a5b"
-  version = "v1.2.3"
-
-[[projects]]
-  branch = "master"
-  name = "go.uber.org/ratelimit"
-  packages = [
-    ".",
-    "internal/clock"
-  ]
-  revision = "c15da02342779cb6dc027fc95ee2277787698f36"
+  revision = "c03cdc3473d98a516a0b9da5e4467dfed305c25e"
+  version = "v1.2.4"
 
 [[projects]]
   branch = "master"
@@ -74,6 +65,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "9f2ec9dc9563691987ba4e214df33faf2b923c4a90bbb945ff2ecb6e8cfd141e"
+  inputs-digest = "3d5e1c94928e8ef986c981e4aba3df17191e4b1ea06c2cdbe9e546e2cf9cdebe"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 12421a0..e612b10 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -27,7 +27,7 @@
 
 [[constraint]]
   name = "github.com/xiaojiaoyu100/cast"
-  version = "v1.2.3"
+  version = "v1.2.4"
 
 [prune]
   unused-packages = true
diff --git a/diamond.go b/diamond.go
index 6d137fd..10b8dab 100644
--- a/diamond.go
+++ b/diamond.go
@@ -4,8 +4,6 @@ import (
 	"math/rand"
 	"time"
 
-	"go.uber.org/ratelimit"
-
 	"github.com/sirupsen/logrus"
 
 	"github.com/xiaojiaoyu100/cast"
@@ -67,8 +65,6 @@ type Diamond struct {
 	units               []Unit
 	errHook             Hook
 	r                   *rand.Rand
-	longPullRate        int
-	longPullRateLimiter ratelimit.Limiter
 }
 
 // New 产生Diamond实例
@@ -98,7 +94,6 @@ func New(addr, tenant, accessKey, secretKey string, setters ...Setter) (*Diamond
 		option:       option,
 		c:            c,
 		r:            r,
-		longPullRate: 6,
 	}
 
 	for _, setter := range setters {
@@ -107,11 +102,13 @@ func New(addr, tenant, accessKey, secretKey string, setters ...Setter) (*Diamond
 		}
 	}
 
-	d.longPullRateLimiter = ratelimit.New(d.longPullRate)
-
 	return d, nil
 }
 
+func randomIntInRange(min, max int) int {
+	return rand.Intn(max-min) + min
+}
+
 // Add 添加想要关心的配置单元
 func (d *Diamond) Add(unit Unit) {
 	unit.ch = make(chan Config)
@@ -131,7 +128,7 @@ func (d *Diamond) Add(unit Unit) {
 			if newContentMD5 != "" {
 				contentMD5 = newContentMD5
 			}
-			time.Sleep(time.Second)
+			time.Sleep(time.Duration(randomIntInRange(20, 100)) * time.Millisecond)
 		}
 	}()
 
diff --git a/long_pull.go b/long_pull.go
index f756451..1c21dbb 100644
--- a/long_pull.go
+++ b/long_pull.go
@@ -14,7 +14,6 @@ const (
 
 // LongPull 监听配置
 func (d *Diamond) LongPull(unit Unit, contentMD5 string) (string, error) {
-	d.longPullRateLimiter.Take()
 	ip, err := d.QueryIP()
 	if err != nil {
 		return "", err
diff --git a/setter.go b/setter.go
index d4a076b..822ad22 100644
--- a/setter.go
+++ b/setter.go
@@ -3,10 +3,4 @@ package aliacm
 // Setter configures the diamond.
 type Setter func(d *Diamond) error
 
-// WithLongPullRate sets long pull rate.
-func WithLongPullRate(rate int) Setter {
-	return func(d *Diamond) error {
-		d.longPullRate = rate
-		return nil
-	}
-}
+