A Policy-Driven Adaptive Resilience Framework for Spring Boot Microservices and Angular Frontends

Abstract

Microservice architectures and rich single-page application (SPA) frontends have become the standard case for enterprise software, yet resilience on both the microservices backend and frontend remains an unresolved engineering problem. The article presents a policy-driven adaptive resilience framework based on runtime contract enforcement and dynamic policy management for Spring Boot microservices and Angular frontends. The architecture consists of three components: first, a central policy engine for all resilience contracts in different versions. Second, a Runtime Contract Enforcer, which transparently intercepts service calls at the back end and the front end. Third, a Monitoring and Feedback Loop component for condition- and knowledge-based policy adaptation. Providing hot-reloadable policy propagation, contract-driven fault tolerance, and full-stack coverage without redeploying services sets apart this article with respect to prior work in static circuit-breaking, Resilience4j, and Istio/Envoy. Businesses evaluate the framework under various common failure scenarios and show improvements to mean time to recover, fault rate under failure, and latency to policy updates.  The article concludes that the framework is a scalable and operationally agile solution for dynamic enterprise deployments.