mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-04 15:40:49 +00:00
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
|
//
|
||
|
|
// AccessExpireLRUCache.h
|
||
|
|
//
|
||
|
|
// $Id: //poco/1.4/Foundation/include/Poco/AccessExpireLRUCache.h#1 $
|
||
|
|
//
|
||
|
|
// Library: Foundation
|
||
|
|
// Package: Cache
|
||
|
|
// Module: AccessExpireLRUCache
|
||
|
|
//
|
||
|
|
// Definition of the AccessExpireLRUCache class.
|
||
|
|
//
|
||
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
||
|
|
// and Contributors.
|
||
|
|
//
|
||
|
|
// SPDX-License-Identifier: BSL-1.0
|
||
|
|
//
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef Foundation_AccessExpireLRUCache_INCLUDED
|
||
|
|
#define Foundation_AccessExpireLRUCache_INCLUDED
|
||
|
|
|
||
|
|
|
||
|
|
#include "Poco/AbstractCache.h"
|
||
|
|
#include "Poco/StrategyCollection.h"
|
||
|
|
#include "Poco/AccessExpireStrategy.h"
|
||
|
|
#include "Poco/LRUStrategy.h"
|
||
|
|
|
||
|
|
|
||
|
|
namespace Poco {
|
||
|
|
|
||
|
|
|
||
|
|
template <
|
||
|
|
class TKey,
|
||
|
|
class TValue,
|
||
|
|
class TMutex = FastMutex,
|
||
|
|
class TEventMutex = FastMutex
|
||
|
|
>
|
||
|
|
class AccessExpireLRUCache: public AbstractCache<TKey, TValue, StrategyCollection<TKey, TValue>, TMutex, TEventMutex>
|
||
|
|
/// An AccessExpireLRUCache 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:
|
||
|
|
AccessExpireLRUCache(long cacheSize = 1024, Timestamp::TimeDiff expire = 600000):
|
||
|
|
AbstractCache<TKey, TValue, StrategyCollection<TKey, TValue>, TMutex, TEventMutex >(StrategyCollection<TKey, TValue>())
|
||
|
|
{
|
||
|
|
this->_strategy.pushBack(new LRUStrategy<TKey, TValue>(cacheSize));
|
||
|
|
this->_strategy.pushBack(new AccessExpireStrategy<TKey, TValue>(expire));
|
||
|
|
}
|
||
|
|
|
||
|
|
~AccessExpireLRUCache()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
AccessExpireLRUCache(const AccessExpireLRUCache& aCache);
|
||
|
|
AccessExpireLRUCache& operator = (const AccessExpireLRUCache& aCache);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace Poco
|
||
|
|
|
||
|
|
|
||
|
|
#endif // Foundation_AccessExpireLRUCache_INCLUDED
|