chromium/components/optimization_guide/core/hint_cache.h

// Copyright 2018 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_OPTIMIZATION_GUIDE_CORE_HINT_CACHE_H_
#define COMPONENTS_OPTIMIZATION_GUIDE_CORE_HINT_CACHE_H_

#include <string>

#include "base/containers/lru_cache.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/time/clock.h"
#include "components/optimization_guide/core/memory_hint.h"
#include "components/optimization_guide/core/optimization_guide_store.h"
#include "components/optimization_guide/proto/hints.pb.h"

class GURL;

namespace optimization_guide {
class StoreUpdateData;

HintLoadedCallback;

// Contains a set of optimization hints received from the Cacao service. This
// may include hints received from the ComponentUpdater and hints fetched from a
// Cacao Optimization Guide Service API. The availability of hints is queryable
// via host name and full URL. The cache itself consists of a backing store,
// which allows for asynchronous loading of any available host-keyed hint, and
// an MRU host-keyed cache and a url-keyed cache, which can be used to
// synchronously retrieve recently loaded hints keyed by URL or host.
class HintCache { … };

}  // namespace optimization_guide

#endif  // COMPONENTS_OPTIMIZATION_GUIDE_CORE_HINT_CACHE_H_