添加主从serf切换事件

zhangzengfei

2023-10-19 8d2a95fc0eeabe1b13d0a914c9ec2845d42c0be3

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package constvar
 
import (
    "github.com/songzhibin97/gkit/cache/local_cache"
    "golang.org/x/sync/singleflight"
)
 
var (
    BlackCache  local_cache.Cache
    SingleGroup = &singleflight.Group{}
)