- webapp Web浏览器前端，采用angualr 2和nodejs
- services 服务后端，采用python
git remote add asyncetcd https://github.com/lcgong/asyncetcd.git
git subtree add --prefix asyncetcd asyncetcd master --squash
在angular/cli无法正常检测到文件变化时，尝试提高限制
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p