Library: Foundation
Package: Cache
Header: Poco/UniqueAccessExpireLRUCache.h
Description
A UniqueAccessExpireLRUCache combines LRU caching and time based per entry expire caching. One can define for each cache entry a separate timepoint but also limit the size of the cache (per default: 1024). Each TValue object must thus offer the following method:
const Poco::Timespan& getTimeout() const;
which returns the relative timespan for how long the entry should be valid without being accessed! The absolute expire timepoint is calculated as now() + getTimeout(). Accessing an object will update this absolute expire timepoint. You can use the Poco::AccessExpirationDecorator to add the getExpiration method to values that do not have a getExpiration function.
Inheritance
Direct Base Classes: AbstractCache < TKey, TValue, StrategyCollection < TKey, TValue >, TMutex, TEventMutex >
All Base Classes: AbstractCache < TKey, TValue, StrategyCollection < TKey, TValue >, TMutex, TEventMutex >
Member Summary
Member Functions: operator =
Constructors
UniqueAccessExpireLRUCache 
UniqueAccessExpireLRUCache(
std::size_t cacheSize = 1024
);
UniqueAccessExpireLRUCache
UniqueAccessExpireLRUCache(
const UniqueAccessExpireLRUCache & aCache
) = delete;
Destructor
~UniqueAccessExpireLRUCache
~UniqueAccessExpireLRUCache() = default;
Member Functions
operator =
UniqueAccessExpireLRUCache & operator = (
const UniqueAccessExpireLRUCache & aCache
) = delete;