A financial cost metric for result caching
Date
2013-07-08Source Title
SIGIR 2013 - Proceedings of the 36th International ACM SIGIR Conference on Research and Development in Information Retrieval
Publisher
ACM
Pages
873 - 876
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
Web 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.
Keywords
Financial costMetric
Result caching
Web search engines
Caching strategy
Cost-aware
Electricity prices
Hit rate
Processing overhead
Information retrieval
Search engines
Websites
Costs