任务接收增加channel字段，postion字段改为channel

zhangqian

2023-09-23 14fc2f577e2c0b7b146c1a430e9438f317ad5b0c

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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{}
)