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| Tekijä: | Bose, I. Cheng, H.K. |
| Otsikko: | Performance models of a firm's proxy cache server |
| Lehti: | Decision Support Systems
2000 : JUL, VOL. 29:1, p. 47-57 |
| Asiasana: | Electronic commerce Information technology Internet Companies |
| Vapaa asiasana: | e-commerce World Wide Web |
| Kieli: | eng |
| Tiivistelmä: | This paper examines the impact of installing a proxy cache server (PCS) on overall response time to Web requests. It is analyzed how various factors affect the performance of that server. This research specifically identifies a "cross-over probability", the minimum cache "hit rate" probability at which installing a PCS becomes beneficial. It is found that this probability decreases as the arrival rate of Web requests or the average file size increases. In particular, the benefits of installing a PCS are more pronounced when the firm's users exhibit heavy Web accesses. Ther is also found a "diminishing rate of return" phenomenon in terms of enhancing the PCS's performance. The managerial implication is that it may not pay to choose an overpowerful PCS as the marginal reduction in the overall response time becomes unjustified. In addition, the "bottleneck" effect of the firm's network bandwidth is investigated and demonstrated. |
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