Migración de un módulo de una Aplicación Monolítica a Microservicios siguiendo el enfoque DevOps y de CICD. Caso de estudio FestumApp y su despliegue en AWS

Abstract

Abstract: This thesis addresses the challenges of monolithic applications that present limitations in scalability, maintainability, and continuous deployment. The work proposes migrating a module from FestumApp, a monolithic application built in Flutter for event management, toward a microservices architecture through the implementation of an independent service in NestJS deployed on AWS. The Strangler Fig pattern was employed to perform a progressive migration without affecting current services, and combined with Clean Architecture, it enabled leveraging existing code. The implementation includes a CI/CD pipeline with GitHub Actions that facilitates deployment on AWS ECS Fargate, achieving considerable reductions in implementation times. Additionally, horizontal auto-scaling was incorporated, and its performance was evaluated through load testing under various parameters. The findings demonstrate that gradual migration is a viable option both technically and economically, providing a replicable model for other cases seeking to transform monolithic applications into microservices hosted in the cloud.