Verification and Validation of Modern Event Driven Asynchronous Applications

In the realm of software engineering, the shift from traditional synchronous systems to event-driven architecture (EDA) is becoming prevalent owing to the latter's efficacy in catering to the augmented demands of contemporary software systems' complexity. EDA, characterized by an event-triggered data flow among software constituents, significantly enhances system responsiveness and scalability, imperative in the digital age. However, the testing paradigms for EDA diverge from those of synchronous systems, primarily due to the unpredictable event order and processing time variance, posing a challenge in ensuring correct and orderly event processing. This paper delineates a novel verification and validation methodology for EDA, leveraging Petri Nets for system modeling. The outlined approach comprises a triad of stages: system behavior simulation via Petri Net modeling, design implementation, and performance evaluation through diverse testing tools, based on the Petri Net model outcomes. One of the paramount advantages of this methodology is the early detection and rectification of issues within the development cycle, thereby economizing time and resources. The findings underscore the potential of the proposed Petri Net based approach as a distinctive and effective strategy for testing event-driven systems, marking a significant stride towards the robust development of efficient, resilient, and scalable distributed software systems in the burgeoning EDA landscape.