schedulers

https://gocn.vip/topics/10589
https://mp.weixin.qq.com/s/7lDC26iwxZUEO-lrHrP1qw

https://gocn.vip/topics/10586

https://embeddedgo.github.io/2020/06/21/playing_with_go_schedulers_on_a_dual-core_risc-v.html

https://blog.lpflpf.cn/passages/time-limiter/
https://www.jianshu.com/p/30c7b847e36d
https://github.com/sethvargo/go-envconfig
https://github.com/razonyang/gopkgs