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# Viper remote for Nacos
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Golang configuration,use to Viper reading from remote Nacos config systems. Viper remote for Naocs.
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```go
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runtime_viper := viper.New()
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remote.SetOptions(&remote.Option{
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Url: "localhost",
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Port: 80,
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NamespaceId: "public",
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GroupName: "DEFAULT_GROUP",
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Config: remote.Config{ DataId: "config_dev" },
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Auth: nil,
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})
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err := remote_viper.AddRemoteProvider("nacos", "localhost", "")
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remote_viper.SetConfigType("yaml")
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_ = remote_viper.ReadRemoteConfig() //sync get remote configs to remote_viper instance memory . for example , remote_viper.GetString(key)
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_ = remote_viper.WatchRemoteConfigOnChannel() //async watch , auto refresh configs.
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appName := remote_viper.GetString("key") // sync get config by key
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fmt.Println(appName)
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```
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