Abstract:In order to solve the massive data query query problem faced by nuclear power enterprises, JNPC carried out an research on application architecture based on big data technology and microservice architecture. Based on the open source software system and adopting the layered architecture design method, the big data technology platform is divided into several levels: data acquisition layer, data calculation layer, data service layer and application layer. At all levels, JNPC research and explore the use of mainstream big data technology products to meet the needs of the corresponding level. In the application architecture, the microservice architecture is innovatively used to replace the previous single application development model. Based on the mainstream Spring Cloud technology system in the industry, the application architecture is fully microservice. Through the new application architecture, JNPC not only implemented technical solutions such as service registration center, service configuration center, service discovery, gateway routing, service high availability, service load balancing, service rapid APIization, etc. but also provide an engineerable path for technology convergence based on big data and microservice.