Crear un sistema web y mensajería para gestión de comprobantes electrónicos aprobado por el SRI mediante una arquitectura de microservicios

Abstract

This work develops a web and messaging system based on a microservices architecture for the management of electronic receipts authorized by the Internal Revenue Service (SRI) in Ecuador. The main objective is to improve the issuance, reception, and distribution of electronic receipts, even during SRI system interruptions. The research is based on theories related to distributed systems, instant messaging, and DevOps methodologies, enabling an agile and efficient approach. A mixed-method design was used, combining literature review with surveys to evaluate user satisfaction. The system was developed using Angular for the frontend, Node.js for the backend, and PostgreSQL for the database. Testing revealed that the system effectively operates in interruption scenarios by assigning pending status to receipts until the SRI service is restored. As a result, business operational continuity and taxpayer satisfaction are enhanced, with receipts also delivered via WhatsApp. The conclusions highlight the project's technical and economic feasibility, as well as its contribution to modernizing tax management in Ecuador. Additional strategies for monitoring and scalability are recommended to handle higher transaction volumes