Prototipo de arquitectura de microservicios para sistemas transaccionales financieros con keycloak

Abstract

In a financial environment where security, scalability, and regulatory compliance are essential, an advanced microservices architecture prototype is presented, designed to enhance the efficiency and resilience of transactional systems. The proposed solution integrates Spring Boot, Spring Cloud, Eureka, Keycloak, and Docker, enabling centralized authentication, load balancing, and high availability, with a scalable approach based on inheritance and efficient load distribution. Given the growing demands of the financial sector, such as low latency, high resilience, and the need for compliance with current international regulations (ISO 27001, PCI DSS, Fintech Law), the study introduces a modular infrastructure with an API Gateway based on Spring Cloud, ensuring interoperability with traditional banking systems through REST, gRPC, and WebSockets protocols. Performance and security tests validated the system’s efficiency, achieving response times below 100 ms in critical transactions, secure authentication via OAuth2 and MFA, and centralized monitoring using Spring Boot Admin. The architecture demonstrated the ability to handle up to one million daily transactions without degradation, ensuring its suitability for high-traffic financial environments. This study confirms that a well-structured microservices architecture provides greater flexibility, security, and scalability than monolithic systems. Its implementation in digital banking and fintech ecosystems can enhance user experience, reduce operational costs, and strengthen financial cybersecurity, ensuring seamless adaptation to evolving regulations and emerging technologies.