Proxy Cache Coherency and Replacement - Towards a More Complete Picture

This work studies the interaction of Web proxy cache coherency and replacement policies using trace-driven simulations. We specifically examine the relative importance of each type of policy in affecting the overall costs, the potential of incorporating coherency issues in cache replacement and the inclusion of additional factors such as frequency of resource use in replacement and coherency policies. The results show that the cache replacement policy in use is the primary cost determinant for relatively small caches, while the cache coherency policy is the determinant for larger caches. Incorporating cache coherency issues in cache replacement policies yields little improvement in overall performance. The use of access frequency in cache replacement, along with temporal locality and size information, results in a simple and better performing policy than found in previously published work. Combining this new replacement policy with the best piggyback-based cache coherency policy resul...

• Type: Conference
• Year: 1999
• Where: ICDCS
• Authors: Balachander Krishnamurthy, Craig E. Wills
• Keywords: Cache Coherency, Cache Coherency Policy, Cache Replacement, Distributed And Parallel Computing, ICDCS 1999