diff --git a/caches/lruCacher.go b/lru_cacher.go
similarity index 99%
rename from caches/lruCacher.go
rename to lru_cacher.go
index 3f28402b..bb223c20 100644
--- a/caches/lruCacher.go
+++ b/lru_cacher.go
@@ -1,5 +1,5 @@
 //LRUCacher implements Cacher according to LRU algorithm
-package caches
+package xorm
 
 import (
 	"container/list"
diff --git a/caches/memoryStore.go b/memroy_store.go
similarity index 91%
rename from caches/memoryStore.go
rename to memroy_store.go
index 67cfb0d4..c5800e46 100644
--- a/caches/memoryStore.go
+++ b/memroy_store.go
@@ -1,17 +1,12 @@
 // MemoryStore implements CacheStore provide local machine
-package caches
+package xorm
 
 import (
-	"errors"
 	"sync"
 
 	"github.com/go-xorm/core"
 )
 
-var (
-	ErrNotExist = errors.New("key not exist")
-)
-
 var _ core.CacheStore = NewMemoryStore()
 
 // memory store
diff --git a/xorm.go b/xorm.go
index 38db6d4f..2b059a09 100644
--- a/xorm.go
+++ b/xorm.go
@@ -11,7 +11,6 @@ import (
 	"time"
 
 	"github.com/go-xorm/core"
-	"github.com/go-xorm/xorm/caches"
 )
 
 const (
@@ -95,14 +94,14 @@ func NewEngine(driverName string, dataSourceName string) (*Engine, error) {
 	return engine, err
 }
 
-func NewLRUCacher(store core.CacheStore, max int) *caches.LRUCacher {
-	return caches.NewLRUCacher(store, core.CacheExpired, core.CacheMaxMemory, max)
+// func NewLRUCacher(store core.CacheStore, max int) *LRUCacher {
+// 	return NewLRUCacher(store, core.CacheExpired, core.CacheMaxMemory, max)
+// }
+
+func NewLRUCacher2(store core.CacheStore, expired time.Duration, max int) *LRUCacher {
+	return NewLRUCacher(store, expired, 0, max)
 }
 
-func NewLRUCacher2(store core.CacheStore, expired time.Duration, max int) *caches.LRUCacher {
-	return caches.NewLRUCacher(store, expired, 0, max)
-}
-
-func NewMemoryStore() *caches.MemoryStore {
-	return caches.NewMemoryStore()
-}
+// func NewMemoryStore() *MemoryStore {
+// 	return NewMemoryStore()
+// }