cloud information system

Cloud-based Distributed Information System Project Description: The aim of this project is to develop cloud-based distributed information system. The information system (of your choice e.g., student records, CD rental, etc.) must be three-tier architecture (client/web – application – database). Each tier must be running on different virtual machines. See figure below for the illustration. These virtual machines may be hosted on a single cloud provider, but preferably on two different cloud providers. respond request respond query Data Synchronization Minimum functional requirements: 1. Client/Web app should be able to a. retrieve, b. add, c. modify, d. delete records stored in the database. 2. App-tier must support a failover system meaning if one App server is down/unavailable, a client app can still access data via another App server. 3. Concurrent access must be supported (App server must support multiple client accesses). 4. Database-tier must achieve some forms of data synchronization. For example if one client app modifies a record on one database server while another client app adds a new record to another database server. Eventually, data (records) stored in both servers must be identical. Manual synchronization is not acceptable. Sample test scenarios: 1. Two clients access two different App servers at the same time. One client add few records while the other client deletes few records. After that both client retrieve all the records. They should see the same records. 2. While two clients access two different App servers, adding few records. One App server will be suspended. Two clients add few more records. Then the suspended App server is resumed. Both clients retrieve the records. Both should get the same records shown. 3. Similar to the scenario discussed in test#2, but the suspension is to be done to one of the database server. 4. Manual modification to one of the database is to be executed. After that both databases are to be checked to ensure data synchronization.