Imports github.com/longjoy/micro-go-book/ch13-seckill/pkg/config github.com/longjoy/micro-go-book/ch13-seckill/sk-core/config github.com/longjoy/micro-go-book/ch13-seckill/sk-core/service/srv_err github.com/longjoy/micro-go-book/ch13-seckill/sk-core/service/srv_user Standard library imports crypto/md5 encoding/json fmt log time