diff --git a/server/common/cache.go b/server/common/cache.go
index 4b453f6e..8df88be1 100644
--- a/server/common/cache.go
+++ b/server/common/cache.go
@@ -86,9 +86,9 @@ func NewKeyValueStore() KeyValueStore {
 
 func (this *KeyValueStore) Get(key string) interface{} {
 	var val interface{}
-	this.Lock()
+	this.RLock()
 	val = this.cache[key]
-	this.Unlock()
+	this.RUnlock()
 	return val
 }