Research and Implementation of Online Judgment System Based on Micro Service

Since the OJ (Online Judgment) system began to be used, the Internet has continued to develop as demand. As a result, higher requirements are placed on the function, performance and scalability of the system. Based in part on the shortcomings of the existing OJ system, this paper puts forward the research and implementation of a kind of OJ system based on micro service; Expounds on the functions and related knowledge of the system; Gives the implementation method, and describes in detail the two key technologies used to deal with malicious code and high concurrency. The system uses the judge machine as a stand-alone module. This module creates micro services using Docker, ensures system security through Docker isolation and runtime and memory limitations, implements Docker Monitoring and system load balancing using Consul, Haproxy, Telegraf and elastic scripts. After the test system is running, the effect is good. The system has certain guiding significance for practical application.