A simple files backup component for a Flight Dynamics System

Abstract

In the last years, the web applications evolved from simple presentation pages to complex software capable of generating dynamic data that is stored in databases and disk files. This is why a lot of companies has started to migrate the software used internally from desktop applications to web applications and this change come with the problem of service availability. If the failure of a desktop application on one station means that only one user does not have access to the service, the failure of the web server blocks all users. To ensure the service availability one method consists in using a backup server that mirrors the main server and that can take over its role in case of a failure. For this to work all data stored in databases and files must be mirrored completely between the two servers. If the mirroring of data stored in databases can be done with services provided by the DBMS, the mirroring of files requires some external processes. This paper presents a component that is optimized for the file mirroring between two servers of many relatively small text files.