Things I learned after getting users
"this is mostly because i relied on a SQL ORM which in short is a tool that makes writing SQL easier to pick up and faster to develop. the biggest downside is that it might execute 50 queries to your database to get a list of information, when it probably only needs 1, which will cause slowdown."<p>I appreciate this honesty. Listen to this old man's advise: learn SQL properly. It's not that hard. Focus on it for a few weeks intensely and you've mastered it for life. Then just write SQL directly.<p>I've had weekends ruined troubleshooting my "highly productive ORM layer" that nuked a production database. Whilst functionally speaking my ORM code was in no way incorrect. I'm talking differences of a thousand fold in query load depending on how one expresses the ORM calls.<p>You can then become proficient in trying to reason and predict about what your ORM calls do in the actual database, but when you're several joins deep, this becomes near impossible. At which point you become the ORM, and might as well just write SQL.