diff --git a/.gitignore b/.gitignore
index 543e80e..c2f7e30 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
-pkg
 .gopath
 .idea
 *.iml
diff --git a/src/pkg/rdb/mix.go b/src/pkg/rdb/mix.go
new file mode 100644
index 0000000..850e387
--- /dev/null
+++ b/src/pkg/rdb/mix.go
@@ -0,0 +1,37 @@
+package rdb
+
+func rdbLoadCheckModuleValue(l *Loader) error {
+	var opcode uint32
+	var err error
+	for {
+		if opcode, err = l.ReadLength(); err != nil {
+			return err
+		} else if opcode == rdbModuleOpcodeEof {
+			break
+		}
+
+		switch opcode {
+		case rdbModuleOpcodeSint:
+			fallthrough
+		case rdbModuleOpcodeUint:
+			if _, err = l.ReadLength(); err != nil {
+				return err
+			}
+		case rdbModuleOpcodeString:
+			if _, err = l.ReadString(); err != nil {
+				return err
+			}
+		case rdbModuleOpcodeFloat:
+			// float 32 bits
+			if _, err = l.ReadFloat(); err != nil {
+				return err
+			}
+		case rdbModuleOpcodeDouble:
+			// double 64 bits
+			if _, err = l.ReadDouble(); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
\ No newline at end of file