BytesToString convert []byte to string.

StringToBytes convert string to []byte.

DefaultLogCompress define whether the log need compress.

DefaultLogMaxAge define the max age of the log files.

DefaultLogMaxBackups define the default log max-backup num.

DefaultLogMaxSize define the default log size per file, unit (M).

DefaultWorkThread used to define the num of update dns-rules threads num.

DefaultLogFile define the default log output file.

详情见互斥关系图， 1 --互斥，0 --不互斥.