CloseCache turn off cache mode.

Debug Print last query sql.

DebugMode Print all errs.

GetMysqlConn create or get a database connection with singleton mode.

Init db params.

NewMysqlConn create a database connection.

ReleaseMode hide all errs.

SetCacheTimeout set cache timeout.

UseCache use cache mode.

Normal mode.

Statement mode.

MysqlDB include mysqldb all params.

TxConn tx obj.