Architectural Evolution: Transitioning from Monoliths to Service-Oriented Systems
DOI:
https://doi.org/10.63282/3050-922X.IJERET-V3I4P107Keywords:
Monolith, Service-Oriented Architecture, Microservices, System Decomposition, Scalability, Risk Management, API Gateway, Software EvolutionAbstract
This work involves introducing a roadmap that transforms legacy monolith systems into Service-Oriented Architectures (SOA). The strategies under consideration include decomposition, risk control, and coordination of overhead during the transformation process. Although monolithic applications appear to be easy to create initially, they are problematic to scale, maintain, and deploy in contemporary, dynamic settings. In this paper, I will present an in-depth scheme that can help companies transform from monoliths to SOA, with associated migration rhythms, refactoring tenets, and appraisal criteria. In the study, both quantitative and qualitative research will be conducted to draw comparisons between migration strategies. Factors taken into account will include the alignment and cost-effectiveness of the business, as well as technical viability. Proposed is a systematic decomposition methodology that relies upon a Domain-Driven Design (DDD), restricted contexts, and API-first strategies. The methods of risk reduction concern downtime of operations, service coordination, and the complexity of inter-service communication. Additionally, the paper addresses integration issues, including service discovery, API gateway setup, message queuing, and data uniformity in distributed services. We study the trade-off between orchestration and choreography and their impact on overall system performance. Such methodology ensures iterative migration frameworks, a technology choice framework, and validation by a real-life scenario based on the remediation of a legacy e-commerce solution. The assessment reveals that scaling (up to 40% quicker scaling events have been measured), deployment frequency (an increase of three times), and fault isolation (a 50% reduction in mean-time-to-recovery) can be improved as a result. The asynchronous messaging and CI/CD pipelines that were automated minimized coordination overhead. Lessons learned emphasize the readiness of organizations, the structure of governance, and thorough documentation of a transition. Lastly, it can be applied in the field of architectural evolution, as the research will provide actionable strategies and decision-making tools to carry out successful migrations with the least amount of risk and the greatest amount of business value
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