diff --git a/README.md b/README.md
index d24aa6f..1afa8ad 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,8 @@ go get github.com/gookit/gsr
 ## Interfaces
 
 - [logger](logger.go)
-- [simple cache](simple_cache.go)
+- [cacher](cacher.go)
+- [marshaler](marshaler.go)
 
 ## Usage
 
diff --git a/simple_cache.go b/cacher.go
similarity index 73%
rename from simple_cache.go
rename to cacher.go
index 3d5c657..b34c851 100644
--- a/simple_cache.go
+++ b/cacher.go
@@ -7,17 +7,15 @@ import (
 
 // SimpleCacher interface definition
 type SimpleCacher interface {
-	// Closer close
+	// Closer close cache handle
 	io.Closer
-	// Clear clear
+	// Clear clear all caches
 	Clear() error
 
 	// Has basic operation
 	Has(key string) bool
 	Del(key string) error
 	Get(key string) interface{}
-	// GetAs get cache value and unmarshal as ptr.
-	GetAs(key string, ptr interface{}) error
 	Set(key string, val interface{}, ttl time.Duration) error
 
 	// GetMulti multi operation
@@ -25,3 +23,11 @@ type SimpleCacher interface {
 	SetMulti(values map[string]interface{}, ttl time.Duration) error
 	DelMulti(keys []string) error
 }
+
+// CodedCacher interface.
+type CodedCacher interface {
+	SimpleCacher
+
+	// GetAs get and decode cache value to object ptr
+	GetAs(key string, ptr interface{}) error
+}