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/*
* 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)
}
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