diff --git a/pkg/structure/define.go b/pkg/structure/define.go
new file mode 100644
index 0000000..6fe4564
--- /dev/null
+++ b/pkg/structure/define.go
@@ -0,0 +1 @@
+package structure
diff --git a/pkg/structure/define/define.go b/pkg/structure/define/define.go
deleted file mode 100644
index 57c3969..0000000
--- a/pkg/structure/define/define.go
+++ /dev/null
@@ -1 +0,0 @@
-package define
diff --git a/pkg/structure/define/interface.go b/pkg/structure/interface.go
similarity index 72%
rename from pkg/structure/define/interface.go
rename to pkg/structure/interface.go
index 2d308cf..78fdfcb 100644
--- a/pkg/structure/define/interface.go
+++ b/pkg/structure/interface.go
@@ -1,4 +1,4 @@
-package define
+package structure
 
 type CacheValue interface {
 	LengthByte() int64
@@ -9,9 +9,11 @@ type ParseComm func(comm string) ([]string, error)
 type CacheStruct interface {
 	SizeByte() int64
 
-	// RollBack 事务相关
+	// TODO RollBack 事务相关, V2 实现
 	RollBack() error
+	// Begin 事务相关, V2 实现
 	Begin() error
+	// Comment 事务相关, V2 实现
 	Comment() error
 
 	ParseCommend(comm ParseComm) ([]string, error)
diff --git a/pkg/structure/stringx/option.go b/pkg/structure/stringx/option.go
new file mode 100644
index 0000000..653ddc2
--- /dev/null
+++ b/pkg/structure/stringx/option.go
@@ -0,0 +1 @@
+package stringx
diff --git a/pkg/structure/stringx/string.go b/pkg/structure/stringx/string.go
new file mode 100644
index 0000000..6b5b3a4
--- /dev/null
+++ b/pkg/structure/stringx/string.go
@@ -0,0 +1,57 @@
+package stringx
+
+import (
+	"unsafe"
+
+	structure "gitee.com/timedb/wheatCache/pkg/structure/define"
+)
+
+type StringxInt struct {
+	val int
+}
+
+type StringxFloat struct {
+	val float64
+}
+
+type Stringx struct {
+	ValFloat  StringxFloat
+	ValInt    StringxInt
+	ValString string
+}
+
+func (s *Stringx) SizeByte() int64 {
+	size := unsafe.Sizeof(s)
+	return int64(size)
+}
+
+// RollBack 事务相关, V2 实现
+func (s *Stringx) RollBack() error {
+	panic("not implemented") // TODO: Implement
+}
+
+// Begin 事务相关, V2 实现
+func (s *Stringx) Begin() error {
+	panic("not implemented") // TODO: Implement
+}
+
+// RollBack 事务相关, V2 实现
+func (s *Stringx) Comment() error {
+	panic("not implemented") // TODO: Implement
+}
+
+func (s *Stringx) ParseCommend(comm structure.ParseComm) ([]string, error) {
+	panic("not implemented") // TODO: Implement
+}
+
+func (s *Stringx) GetValue(opt ...string) structure.CacheValue {
+	panic("not implemented") // TODO: Implement
+}
+
+func (s *Stringx) SetValue(opt ...string) error {
+	panic("not implemented") // TODO: Implement
+}
+
+func (s *Stringx) Encode() ([]byte, error) {
+	panic("not implemented") // TODO: Implement
+}