When IDatabase was added as singleton service:

string mysqlSetting.ReadWriteURI = "**********";
return new Database(mysqlSetting.ReadWriteURI, DatabaseType.MySQL, MySqlClientFactory.Instance);

Thinking of the performance lost of open/close conn, should I inherit from IDisposable and call db.Dispose in the implementation of Dispose() method in the transient service?

the MySQ

DbDataAdapter.SelectQuery.SetMapper was added in #28 , lets add simple example that illustrates how to use it (map select result to several POCO models, custom mapping logic).