https://blog.wongcw.com/2022/09/25/certain-affinity%e5%8f%af%e8%83%bd%e5%9c%a8%e9%a0%98%e5%b0%8e%e9%96%8b%e7%99%bc%e3%80%8a%e5%85%89%e7%92%b0%e3%80%8b%e6%96%b0%e4%bd%9c/