by 夏泽民 Sep 10, 2020
https://mp.weixin.qq.com/s/k2j2nJNvriJUIi4X10rQzw https://gocn.vip/topics/10941 https://dev.to/jbszczepaniak/dynamodb-with-go-4-indexes-3doi
https://dev.to/dextication/fast-thread-safe-id-generation-in-golang-38li
