1 files changed, 0 insertions, 42 deletions
diff --git a/ptrie/cache.go b/ptrie/cache.go
deleted file mode 100644
index 721dc4cf6..000000000
--- a/ptrie/cache.go
+++ /dev/null
@@ -1,42 +0,0 @@
-package ptrie
-
-type Backend interface {
-	Get([]byte) ([]byte, error)
-	Put([]byte, []byte)
-}
-
-type Cache struct {
-	store   map[string][]byte
-	backend Backend
-}
-
-func NewCache(backend Backend) *Cache {
-	return &Cache{make(map[string][]byte), backend}
-}
-
-func (self *Cache) Get(key []byte) []byte {
-	data := self.store[string(key)]
-	if data == nil {
-		data, _ = self.backend.Get(key)
-	}
-
-	return data
-}
-
-func (self *Cache) Put(key []byte, data []byte) {
-	self.store[string(key)] = data
-}
-
-func (self *Cache) Flush() {
-	for k, v := range self.store {
-		self.backend.Put([]byte(k), v)
-	}
-
-	// This will eventually grow too large. We'd could
-	// do a make limit on storage and push out not-so-popular nodes.
-	//self.Reset()
-}
-
-func (self *Cache) Reset() {
-	self.store = make(map[string][]byte)
-}