document: Modeling frequently accessed wireless data with weak consistency To reduce the response times of wireless data access in a mobile network , caches are utilized in wireless handheld devices . If the original data entry has been updated , the cached data in the handheld device becomes stale . Thus , a mechanism is required to predict when the cached copy will expire . This paper studies a weakly consistent data access mechanism that computes the time-to-live -LRB- TTL -RRB- interval to predict the expiration time . We propose an analytic model to investigate this TTL-based algorithm for frequently accessed data . The analytic model is validated against simulation experiments . Our study quantitatively indicates how the TTL-based algorithm reduces the wireless communication cost by increasing the probability of stale accesses . Depending on the requirements of the application , appropriate parameter values can be selected based on the guidelines provided
doc_bio_tags: O O O O O O B I O O O O O O B I I O O B I O B O O O B I I O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O B I O O O B I O O O O O O O O O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O
extractive_keyphrases: weak consistency wireless data access mobile network caches wireless handheld devices data entry analytic model simulation experiments wireless communication cost
abstractive_keyphrases: frequently accessed wireless data modeling response time reduction time-to-live interval expiration time prediction stale access probability