Prefetching and Caching in Internet of Things Environment using Publish Subscribe Model

With the rapid increase in wireless technologies and mobile devices in our daily lives, Internet of things has become very popular and is an emerging trend prevailing today. Since there are millions of devices sharing data in the Internet of Things and these devices can be stationary or mobile, therefore there are varying bandwidth connections. This varying bandwidth can have direct impact on performance of the applications running on these devices. In this project, we use publish subscribe model for prefetching and caching the realtime data that can be used in the future by the applications running on IoT devices. Prefetching relevant information before it is required by the applications can significantly improve the performance of applications and overcome delay caused by lower bandwidths situation or out of range devices. With publish subscribe model, the subscribers of the network have the advantage of getting the prefetched information which they can use and similarly the publishers get the benefits when they act as subscribers in future.