feat: local cache

pkg/localcache/lru/lru_slot.go

@@ -0,0 +1,37 @@
+package lru
+
+func NewSlotLRU[K comparable, V any](slotNum int, hash func(K) uint64, create func() LRU[K, V]) LRU[K, V] {
+	x := &slotLRU[K, V]{
+		n:     uint64(slotNum),
+		slots: make([]LRU[K, V], slotNum),
+		hash:  hash,
+	}
+	for i := 0; i < slotNum; i++ {
+		x.slots[i] = create()
+	}
+	return x
+}
+
+type slotLRU[K comparable, V any] struct {
+	n     uint64
+	slots []LRU[K, V]
+	hash  func(k K) uint64
+}
+
+func (x *slotLRU[K, V]) getIndex(k K) uint64 {
+	return x.hash(k) % x.n
+}
+
+func (x *slotLRU[K, V]) Get(key K, fetch func() (V, error)) (V, error) {
+	return x.slots[x.getIndex(key)].Get(key, fetch)
+}
+
+func (x *slotLRU[K, V]) Del(key K) bool {
+	return x.slots[x.getIndex(key)].Del(key)
+}
+
+func (x *slotLRU[K, V]) Stop() {
+	for _, slot := range x.slots {
+		slot.Stop()
+	}
+}