diff --git a/internal/caches/list_file.go b/internal/caches/list_file.go
index 8b1386c..83b8462 100644
--- a/internal/caches/list_file.go
+++ b/internal/caches/list_file.go
@@ -331,11 +331,11 @@ func (this *FileList) Close() error {
 }
 
 func (this *FileList) GetDBIndex(hash string) uint64 {
-	return fnv.Hash(hash) % CountFileDB
+	return fnv.HashString(hash) % CountFileDB
 }
 
 func (this *FileList) getDB(hash string) *FileListDB {
-	return this.dbList[fnv.Hash(hash)%CountFileDB]
+	return this.dbList[fnv.HashString(hash)%CountFileDB]
 }
 
 func (this *FileList) remove(hash string) (notFound bool, err error) {
diff --git a/internal/ttlcache/cache.go b/internal/ttlcache/cache.go
index f7a10ff..06db1c1 100644
--- a/internal/ttlcache/cache.go
+++ b/internal/ttlcache/cache.go
@@ -74,12 +74,12 @@ func (this *Cache) Write(key string, value interface{}, expiredAt int64) (ok boo
 		return
 	}
 
-	currentTimestamp := time.Now().Unix()
+	var currentTimestamp = utils.UnixTime()
 	if expiredAt <= currentTimestamp {
 		return
 	}
 
-	maxExpiredAt := currentTimestamp + 30*86400
+	var maxExpiredAt = currentTimestamp + 30*86400
 	if expiredAt > maxExpiredAt {
 		expiredAt = maxExpiredAt
 	}
diff --git a/internal/utils/fnv/hash.go b/internal/utils/fnv/hash.go
index 644f9e4..581d565 100644
--- a/internal/utils/fnv/hash.go
+++ b/internal/utils/fnv/hash.go
@@ -7,9 +7,20 @@ const (
 	prime64  uint64 = 1099511628211
 )
 
-// Hash
+// HashString
 // 非unique Hash
-func Hash(key string) uint64 {
+func HashString(key string) uint64 {
+	var hash = offset64
+	for _, b := range key {
+		hash ^= uint64(b)
+		hash *= prime64
+	}
+	return hash
+}
+
+// Hash
+// 非unique Hash
+func Hash(key []byte) uint64 {
 	var hash = offset64
 	for _, b := range key {
 		hash ^= uint64(b)
diff --git a/internal/utils/fnv/hash_test.go b/internal/utils/fnv/hash_test.go
index 524778f..3b43293 100644
--- a/internal/utils/fnv/hash_test.go
+++ b/internal/utils/fnv/hash_test.go
@@ -10,7 +10,7 @@ import (
 
 func TestHash(t *testing.T) {
 	for _, key := range []string{"costarring", "liquid", "hello"} {
-		var h = fnv.Hash(key)
+		var h = fnv.HashString(key)
 		t.Log(key + " => " + types.String(h))
 	}
 }
diff --git a/internal/waf/checkpoints/checkpoint.go b/internal/waf/checkpoints/checkpoint.go
index 3535084..ef3b58a 100644
--- a/internal/waf/checkpoints/checkpoint.go
+++ b/internal/waf/checkpoints/checkpoint.go
@@ -1,5 +1,10 @@
 package checkpoints
 
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/waf/requests"
+	"net/http"
+)
+
 type Checkpoint struct {
 }
 
@@ -30,3 +35,16 @@ func (this *Checkpoint) Start() {
 func (this *Checkpoint) Stop() {
 
 }
+
+func (this *Checkpoint) RequestBodyIsEmpty(req requests.Request) bool {
+	if req.WAFRaw().ContentLength == 0 {
+		return true
+	}
+
+	var method = req.WAFRaw().Method
+	if method == http.MethodHead || method == http.MethodGet {
+		return true
+	}
+
+	return false
+}
diff --git a/internal/waf/checkpoints/request_all.go b/internal/waf/checkpoints/request_all.go
index 30a5f98..fc76b97 100644
--- a/internal/waf/checkpoints/request_all.go
+++ b/internal/waf/checkpoints/request_all.go
@@ -18,6 +18,11 @@ func (this *RequestAllCheckpoint) RequestValue(req requests.Request, param strin
 		valueBytes = append(valueBytes, req.WAFRaw().URL.RequestURI()...)
 	}
 
+	if this.RequestBodyIsEmpty(req) {
+		value = valueBytes
+		return
+	}
+
 	if req.WAFRaw().Body != nil {
 		valueBytes = append(valueBytes, ' ')
 
diff --git a/internal/waf/checkpoints/request_body.go b/internal/waf/checkpoints/request_body.go
index a04d0ff..ce00565 100644
--- a/internal/waf/checkpoints/request_body.go
+++ b/internal/waf/checkpoints/request_body.go
@@ -11,6 +11,11 @@ type RequestBodyCheckpoint struct {
 }
 
 func (this *RequestBodyCheckpoint) RequestValue(req requests.Request, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+	if this.RequestBodyIsEmpty(req) {
+		value = ""
+		return
+	}
+
 	if req.WAFRaw().Body == nil {
 		value = ""
 		return
diff --git a/internal/waf/checkpoints/request_form_arg.go b/internal/waf/checkpoints/request_form_arg.go
index 1862784..9ebc929 100644
--- a/internal/waf/checkpoints/request_form_arg.go
+++ b/internal/waf/checkpoints/request_form_arg.go
@@ -12,6 +12,11 @@ type RequestFormArgCheckpoint struct {
 }
 
 func (this *RequestFormArgCheckpoint) RequestValue(req requests.Request, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+	if this.RequestBodyIsEmpty(req) {
+		value = ""
+		return
+	}
+
 	if req.WAFRaw().Body == nil {
 		value = ""
 		return
diff --git a/internal/waf/checkpoints/request_upload.go b/internal/waf/checkpoints/request_upload.go
index ed43dcf..9608f0e 100644
--- a/internal/waf/checkpoints/request_upload.go
+++ b/internal/waf/checkpoints/request_upload.go
@@ -17,6 +17,11 @@ type RequestUploadCheckpoint struct {
 }
 
 func (this *RequestUploadCheckpoint) RequestValue(req requests.Request, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+	if this.RequestBodyIsEmpty(req) {
+		value = ""
+		return
+	}
+
 	value = ""
 	if param == "minSize" || param == "maxSize" {
 		value = 0
diff --git a/internal/waf/checkpoints/response_body.go b/internal/waf/checkpoints/response_body.go
index a39fc67..beffed2 100644
--- a/internal/waf/checkpoints/response_body.go
+++ b/internal/waf/checkpoints/response_body.go
@@ -22,6 +22,11 @@ func (this *ResponseBodyCheckpoint) RequestValue(req requests.Request, param str
 }
 
 func (this *ResponseBodyCheckpoint) ResponseValue(req requests.Request, resp *requests.Response, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+	if resp.ContentLength == 0 {
+		value = ""
+		return
+	}
+
 	value = ""
 	if resp != nil && resp.Body != nil {
 		if len(resp.BodyData) > 0 {