diff --git a/pkg/lru/lru.go b/pkg/lru/lru.go
index 40cc014..4dd6374 100644
--- a/pkg/lru/lru.go
+++ b/pkg/lru/lru.go
@@ -6,8 +6,6 @@ import (
 	"gitee.com/timedb/wheatCache/pkg/errorx"
 	"gitee.com/timedb/wheatCache/pkg/event"
 	"gitee.com/timedb/wheatCache/pkg/structure"
-	"gitee.com/timedb/wheatCache/pkg/util"
-	"github.com/spf13/viper"
 	"sync/atomic"
 )
 
@@ -34,29 +32,29 @@ func (lru *SingleCache) UpdateLruSize(length structure.UpdateLength) {
 }
 
 func cacheInit() (int64, int64, int) {
-	maxSize := viper.GetString("lruCache.maxSize")
-	retMaxSize, maxErr := util.ParseSizeToBit(maxSize)
-	if maxErr != nil {
-		return 0, 0, 0
-	}
-	if retMaxSize == 0 {
-		retMaxSize = lruMaxSize
-	}
-
-	clearSize := viper.GetString("lruCache.clearSize")
-	retClearSize, clearErr := util.ParseSizeToBit(clearSize)
-	if clearErr != nil {
-		return 0, 0, 0
-	}
-	if retClearSize == 0 {
-		retClearSize = lruClearSize
-	}
-
-	maxDriver := viper.GetInt("lruCache.eventDriverSize")
-	if maxDriver == 0 {
-		maxDriver = lruEventDriver
-	}
-	return retMaxSize, retClearSize, maxDriver
+	//maxSize := viper.GetString("lruCache.maxSize")
+	//retMaxSize, maxErr := util.ParseSizeToBit(maxSize)
+	//if maxErr != nil {
+	//	return 0, 0, 0
+	//}
+	//if retMaxSize == 0 {
+	//	retMaxSize = lruMaxSize
+	//}
+	//
+	//clearSize := viper.GetString("lruCache.clearSize")
+	//retClearSize, clearErr := util.ParseSizeToBit(clearSize)
+	//if clearErr != nil {
+	//	return 0, 0, 0
+	//}
+	//if retClearSize == 0 {
+	//	retClearSize = lruClearSize
+	//}
+	//
+	//maxDriver := viper.GetInt("lruCache.eventDriverSize")
+	//if maxDriver == 0 {
+	//	maxDriver = lruEventDriver
+	//}
+	return 30, 15, 2000
 }
 
 // NewLRUCache lru初始化
@@ -95,12 +93,17 @@ func (lru *SingleCache) Add(key string, val structure.KeyBaseInterface) {
 	if elVal, ok := lru.lruMap[key]; ok {
 		lru.li.MoveToFront(elVal)
 		elVal.Value = keyBaseVal
+		err := lru.DelToClearSize()
+		if err != nil{
+			return
+		}
 		return
 	}
 	valEl := lru.li.PushFront(keyBaseVal)
 	lru.lruMap[key] = valEl
 	//增加大小
 	lru.UpdateLruSize(structure.UpdateLength(valEl.Value.(*keyBaseValue).val.SizeByte()))
+	lru.DelToClearSize()
 }
 
 // Get 查找key对应的value
@@ -128,3 +131,17 @@ func (lru *SingleCache) Del() error {
 	lru.li.Remove(data)
 	return nil
 }
+
+//DelToClearSize 删除至清理长度大小
+func (lru *SingleCache) DelToClearSize() error {
+	for {
+		if lru.nowSize > (4/3) * lru.clearSize{
+			err := lru.Del()
+			if err != nil{
+				return err
+			}
+		} else {
+			return nil
+		}
+	}
+}
diff --git a/pkg/lru/lru_test.go b/pkg/lru/lru_test.go
index 7cba185..3bc8f8d 100644
--- a/pkg/lru/lru_test.go
+++ b/pkg/lru/lru_test.go
@@ -20,5 +20,21 @@ func TestNewLRUCache(t *testing.T) {
 	cache.Del()
 	fmt.Println(cache.nowSize)
 	_, isTrue := cache.Get("1")
-	require.Equal(t, isTrue, true)
+	require.Equal(t, isTrue, false)
+}
+
+func TestSingleCache_DelToClearSize(t *testing.T) {
+	cache := NewLRUCache()
+	v1 := stringx.NewStringSingle()
+	v2 := stringx.NewStringSingle()
+	//v3 := stringx.NewStringSingle()
+	//v4 := stringx.NewStringSingle()
+	cache.Add("1", v1)
+	cache.Add("2", v2)
+	res, ok := cache.Get("1")
+	if ok {
+		fmt.Println(res)
+	}
+	_, ok = cache.Get("1")
+	require.Equal(t, ok, false)
 }
\ No newline at end of file