feat: local cache

pkg/localcache/lru/lru.go

@@ -0,0 +1,20 @@
+package lru
+
+import "github.com/hashicorp/golang-lru/v2/simplelru"
+
+type EvictCallback[K comparable, V any] simplelru.EvictCallback[K, V]
+
+type LRU[K comparable, V any] interface {
+	Get(key K, fetch func() (V, error)) (V, error)
+	Del(key K) bool
+	Stop()
+}
+
+type Target interface {
+	IncrGetHit()
+	IncrGetSuccess()
+	IncrGetFailed()
+
+	IncrDelHit()
+	IncrDelNotFound()
+}