Abstract

Web application is a key app on mobile devices. However, the performance of mobile Web applications is known to be poor. Resource loading is a key factor influencing Web applications performance. Cache is an effective mechanism to accelerate resource loading by enabling to access resources directly from local storage. In this paper, we make a quantitative study to characterize how mobile Web applications leverage cache to improve its performance. The results show that mobile Web cache is not so efficient. On one hand, redundant transfers are always there to waste data traffic and energy consumption no matter the client support is perfect or not. On the other hand, changed resources are not replaced from cache in time, leading to incorrect functions.

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