Sazoğlu, Fethi BurakCambazoğlu, B. B.Özcan, R.Altıngövde, I. S.Ulusoy, Özgür2016-02-082016-02-082013-07-08http://hdl.handle.net/11693/27979Date of Conference: 28 July - 01 August, 2013Conference name: SIGIR '13 Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrievalWeb search engines cache results of frequent and/or recent queries. Result caching strategies can be evaluated using different metrics, hit rate being the most well-known. Recent works take the processing overhead of queries into account when evaluating the performance of result caching strategies and propose cost-aware caching strategies. In this paper, we propose a financial cost metric that goes one step beyond and takes also the hourly electricity prices into account when computing the cost. We evaluate the most well-known static, dynamic, and hybrid result caching strategies under this new metric. Moreover, we propose a financial-cost-aware version of the well-known LRU strategy and show that it outperforms the original LRU strategy in terms of the financial cost metric. Copyright © 2013 ACM.EnglishFinancial costMetricResult cachingWeb search enginesCaching strategyCost-awareElectricity pricesHit rateProcessing overheadInformation retrievalSearch enginesWebsitesCostsConference Paper10.1145/2484028.2484182