2022/11/29 by Fathima Zarin Faizal, Priya Singh, Faizal, Fathima Zarin +5
Computer Science · Materials Science · #Caching and Content Delivery #Covalent Organic Framework Applications #FOS: Computer and information sciences #Networking and Internet Architecture (cs.NI) #Optimization and Search Problems #Performance (cs.PF)
paper · pdf · doi:10.48550/arxiv.2211.16051
openalex publication_date 2022/11/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the online caching problem for a cache of limited size. In a time-slotted system, a user requests one file from a large catalog in each slot. If the requested file is cached, the policy receives a unit reward and zero rewards otherwise. We show that a Follow the Perturbed Leader (FTPL)-based anytime caching policy is simultaneously regret-optimal for both adversarial and i.i.d. stochastic arrivals. Further, in the setting where there is a cost associated with switching the cached contents, we propose a variant of FTPL that is order-optimal with respect to time for both adversarial and stochastic arrivals and has a significantly better performance compared to FTPL with respect to the switching cost for stochastic arrivals. We also show that these results can be generalized to the setting where there are constraints on the frequency with which cache contents can be changed. Finally, we validate the results obtained on various synthetic as well as real-world traces.