Familiar with Java API, including set framework, multithreading, I / O (NiO), socket, JDBC, XML, reflection, etc; Proficient in spring / springmvc / springdatajpa / springboot, hibernate and other back-end development frameworks; Proficient in elkb log collection and analysis technology stack; Familiar with idea, eclipse, SVN, GIT and other development tools; Proficient in mysql, Oracle, localization (Dayun, gbase) and other databases; Proficient in tomcat, localization (Inspur, Zhongchuang) and other middleware; Familiar with docker, docker compose and other container technologies; Proficient in using easyUI, jQuery, hightopo, echarts and other front-end technical frameworks; Proficient in FreeMarker, velocity template engine technology; Familiar with Hadoop, spark, Kafka, HBase, kylin and other big data ecosystem components; It has some experience in adapting to the operating system, database and Middleware of the domestic platform;