Upstream sync

infra/config/config.go

@@ -119,6 +119,7 @@ type CacheConfig struct {
 	Pass              string
 	Prefix            string
 	DefaultExpiration time.Duration
+	Master            string
 }
 
 // CacheConfig represents the configuration values about the documentation config.
@@ -194,6 +195,7 @@ func Read() (*Config, error) {
 			Pass:              viper.GetString("cache.pass"),
 			Prefix:            viper.GetString("cache.prefix"),
 			DefaultExpiration: viper.GetDuration("cache.default-expiration"),
+			Master:            viper.GetString("cache.master-name"),
 		},
 		Lyft: LyftConfig{
 			Client:       viper.GetString("lyft.key"),