Design and implementation of a digital calibration certificate web service system based on microservice architecture

Digital Calibration Certificate (DCC) is very important for metrology in the digital age. We have developed a bilingual NIM-DCC metamodel based on the PTB-DCC metamodel, and developed software for generating and validating NIM-DCC. The system is deployed on a microservices architecture, supporting service scalability and coordinating development and operation. The system has different layers, multiple fields, clear interfaces and standardized transparency. So it's high cohesion and low coupling. The operation process of the guided generation of DCC for humans is similar to the generation of electronic calibration certificates. It has been tested and applied in more than 10 laboratories of NIM and local metrology institutes.