poco/Foundation/include/Poco/ExpireLRUCache.h

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//
// ExpireLRUCache.h
//
// Library: Foundation
// Package: Cache
// Module: ExpireLRUCache
//
// Definition of the ExpireLRUCache class.
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
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//
#ifndef Foundation_ExpireLRUCache_INCLUDED
#define Foundation_ExpireLRUCache_INCLUDED
#include "Poco/AbstractCache.h"
#include "Poco/StrategyCollection.h"
#include "Poco/ExpireStrategy.h"
#include "Poco/LRUStrategy.h"
namespace Poco {
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template <
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class TKey,
class TValue,
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class TMutex = FastMutex,
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class TEventMutex = FastMutex
>
class ExpireLRUCache: public AbstractCache<TKey, TValue, StrategyCollection<TKey, TValue>, TMutex, TEventMutex>
/// An ExpireLRUCache combines LRU caching and time based expire caching.
/// It cache entries for a fixed time period (per default 10 minutes)
/// but also limits the size of the cache (per default: 1024).
{
public:
ExpireLRUCache(std::size_t cacheSize = 1024, Timestamp::TimeDiff expire = 600000):
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AbstractCache<TKey, TValue, StrategyCollection<TKey, TValue>, TMutex, TEventMutex>(StrategyCollection<TKey, TValue>())
{
this->_strategy.pushBack(new LRUStrategy<TKey, TValue>(cacheSize));
this->_strategy.pushBack(new ExpireStrategy<TKey, TValue>(expire));
}
~ExpireLRUCache()
{
}
private:
ExpireLRUCache(const ExpireLRUCache& aCache);
ExpireLRUCache& operator = (const ExpireLRUCache& aCache);
};
} // namespace Poco
#endif // Foundation_ExpireLRUCache_INCLUDED