Initial QSfera import

Server/vendor/github.com/minio/minio-go/v7/pkg/kvcache/cache.go

@@ -0,0 +1,54 @@
+/*
+ * MinIO Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2025 MinIO, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package kvcache
+
+import "sync"
+
+// Cache - Provides simple mechanism to hold any key value in memory
+// wrapped around via sync.Map but typed with generics.
+type Cache[K comparable, V any] struct {
+	m sync.Map
+}
+
+// Delete delete the key
+func (r *Cache[K, V]) Delete(key K) {
+	r.m.Delete(key)
+}
+
+// Get - Returns a value of a given key if it exists.
+func (r *Cache[K, V]) Get(key K) (value V, ok bool) {
+	return r.load(key)
+}
+
+// Set - Will persist a value into cache.
+func (r *Cache[K, V]) Set(key K, value V) {
+	r.store(key, value)
+}
+
+func (r *Cache[K, V]) load(key K) (V, bool) {
+	value, ok := r.m.Load(key)
+	if !ok {
+		var zero V
+		return zero, false
+	}
+	return value.(V), true
+}
+
+func (r *Cache[K, V]) store(key K, value V) {
+	r.m.Store(key, value)
+}