chromium/components/feed/core/v2/public/persistent_key_value_store.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_FEED_CORE_V2_PUBLIC_PERSISTENT_KEY_VALUE_STORE_H_
#define COMPONENTS_FEED_CORE_V2_PUBLIC_PERSISTENT_KEY_VALUE_STORE_H_

#include <memory>
#include <optional>
#include <string>

#include "base/functional/callback.h"

namespace feed {

// A generic persistent key-value cache. Has a maximum size determined by
// `feed::Config`. Once size of all values exceed the maximum, older keys
// are eventually evicted. Key age is determined only by the last call to
// `Put()`.
class PersistentKeyValueStore { … };

}  // namespace feed

#endif  // COMPONENTS_FEED_CORE_V2_PUBLIC_PERSISTENT_KEY_VALUE_STORE_H_