Transforming Monolithic Systems to Microservices - An Analysis Toolkit for Legacy Code Evaluation

Microservices has become one of the mainstream approaches for system architecture; industry accept the importance of migrating existing monolithic systems into microservices-based architecture to gain benefits. Often it is a challenging task to achieve as the monolithic systems are tightly coupled from their implementation perspectives. To migrate existing monolithic systems, it may require the architecture diagrams, system artefacts and people who know the system well etc. yet not all the time we find these resources. With suitable tool support, we can get insight into the possible services which can be found in the existing monolithic system at code level without worrying about the existence of architecture diagrams, experts etc. It allows us to make efficient decisions on what to move as microservices from the monolithic system. This research introduced a toolkit to analyse monolithic systems and propose the best ways to decompose the functionality into a set of microservices. The evaluation shows accurate revamping of the system architecture with suitable microservices suite.