换一种方式检查plc连接

zhangqian

2023-09-15 915253f87d4ef04d886bebb50135d75082ae0eee

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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{}
)