This article raises more questions than answers. Don't create a medium account just to read it.<p>One red flag is when the author considers the following as a positive change:<p>- The Big Specific DAO has a SQL statement that joins all of the data. The SQL query had more than 100 lines!<p><i>shudders</i><p>Another red flag is the first paragraph itself. Mentioning TDD in the context of patterns which somehow affect performance.