blastbao / ratelimit Goto Github PK

policies of ratelimit, including (bbr, token, leaky bucket .etc)

• CPU (load) Slip average of CPU load in last 1 second, and collect time interval is 250ms]
• InFlight The number of request those are dealing by the server.
• Pass The count of success count.
• RT Response time of success requests.
• MaxPass 表示最近 5s 内，单个采样窗口中最大的请求数
• MinRt 表示最近 5s 内，单个采样窗口中最小的响应时间
• Windows 表示一秒内采样窗口的数量，默认配置中是 5s 50 个采样，那么 windows 的值为 10

cpu > 800 AND (Now - PrevDrop) < 1s AND (MaxPass * MinRt * Windows / 1000) < InFlight

• https://github.com/go-kratos/kratos/blob/master/pkg/ratelimit/bbr/bbr.go
• https://mp.weixin.qq.com/s/ajfNMHY_LJsCnVlyoCT6qg [Chinese POST]
• https://github.com/alibaba/sentinel-golang/wiki/%E7%B3%BB%E7%BB%9F%E8%87%AA%E9%80%82%E5%BA%94%E6%B5%81%E6%8E%A7