diff --git a/pkg/caches/lru.go b/pkg/caches/lru.go
index 2444ffa..0606049 100644
--- a/pkg/caches/lru.go
+++ b/pkg/caches/lru.go
@@ -5,12 +5,14 @@ import (
 )
 
 /*
-Use a least recently used caching strategy:
+LRUMap is a cache map which uses
+a least recently used caching strategy:
 Store last access in map, retrieve least recently
 used key.
 */
 type LRUMap map[string]time.Time
 
+// LRU retrievs the least recently used key
 func (lrumap LRUMap) LRU() string {
 	t := time.Now()
 	key := ""