Replacing a monolithic web application with a new backend framework

Abstract: Web Technologies, particularly the web application, have become an essential component of the business world in our daily life. By utilizing the web application, it is convenient for human beings to search the information, make the payment and communicate with others through Internet. However, according to a report from the Society of Digital Agencies, 77% of companies believe that poor website user experience is a weakness for their clients, which making poor user experience the most significant weakness agencies identified. As for current monolithic web application of booking course system, all the components are tightly integrated in one module so that it is difficult to maintain and make changes for both currents functions and new functions. In addition, the algorithms of some functions are vulnerable. For example, the offer code corresponding to the one course can be used for another course that should not be on sales promotion. This thesis presents a decoupling of the monolithic architecture. The monolithic architecture composes all in one piece and implement an alternative solution for booking course system based on representational state transfer web service, spring, WordPress and bootstrap frameworks. Moreover, this thesis focuses on improving the vulnerable algorithm for the old booking system. In the end, some non-functional requirement like user experience will also be taken in consideration. In this thesis, the result proves the feasibility of the decoupling monolithic architecture by exploiting RESTful web services.