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README

LRU Cache

Fast, thread safe C++ template with Least Recently Used (LRU)
removal semantics. Complete with a comprehensive unit test
suite. Threading features require the BOOST scientific library to be
installed.

Usage:

An LRU cache is a fixed size cache that discards the oldest (least
recently accessed) elements after it fills up.  It's ideally
suited to be used in situations where you need to speed up access to
slower data sources (databases, synthetic structures, etc.). Below is
a simple example of using it to cache strings using integer keys.

Example:

------------------------->8-----------------------------------------------------------
#include "lru_cache.h"
#include <string>
#include <iostream>

int main(void) {
	// Typedef our template for easy of readability and use.
	typedef LRUCache<int,std::string> string_cache_t;
	
	// Instantiate a string cache with at most three elements.
	string_cache_t *cache = new string_cache_t(3);
	
	// Insert data into the cache.
	std::string quote_1 = "Number is the within of all things. -Pythagoras";
	cache->insert( 4, quote_1 );

	// Fetch it out.
	std::cout << cache->fetch( 4 ) << std::endl;	
}
------------------------------------------8<------------------------------------------

See Also:

   http://patrickaudley.com/code/project/lrucache

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Least Recently Used C++ template

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