Exploring a Disconnected Synchronization Architecture Between Android Client and Cloud

Exploring a Disconnected Synchronization Architecture Between Android Client and Cloud
Authors:PRATIK NADAGOUDA, SAURABH PHADNIS

Abstract: Cloud computing as a form of data storage and retrieval through client-server based software has thoroughly pervaded through mobile application development. A multitude of applications are present requiring continuous internet connectivity for data access from the applications’ host servers. The problem addressed in this paper is facilitating data availability even in environments, which do not allow for continuous internet accessibility. We have developed a sample application for doctors to use, based on the Android mobile platform as the client and the Google App Engine as the backend server. In this case, we have explained how synchronization can be done through encrypted JSON format messages when internet is available, while data is stored efficiently in the local mobile database for offline access. 

Keywords: Android, Google App Engine, Data Synchronization, Medical Application. 

I. INTRODUCTION 

 The popularity of mobile devices has increased rapidly in the recent years. A report by Gartner states that the worldwide total sales of mobile handsets in 2013 has surpassed 1.8 billion. Out of these, over 750 million were Android based smart phones. Gartner says Android had a 78.4 % market share in 2013, a 3.5% increase from 2012 [1]. It is plain to see that the popularity of Android is due to its ease of use, and consequently, this has made it possible for developers to reach a wider audience with innovative applications. Medicine is one of the fields in which technology has become common to increase efficiency in application. However, on one hand large hospitals have patient database storage units, online record access, and software for staff usage; and on the other hand it is difficult for small private practitioners to afford such technology. In relation to the vast numbers of private clinics present, there is a dearth of technological facilities available to them. We present an application that will provide the required accessibility to data to help doctors organize and maintain their patient information. 

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