Hook

Their other posts in the index, biggest breakout first.
Okay, so now you've built the first version of the app. That's step one. If people actually start using it, you need to make sure it does not break or get abused. This means stuff like adding rate limits. So people cannot spam your login, sign up or AI, M points, etc. Using a real authentication provider like I mentioned with click or firebase, lock down your database with low level security so users can only see their own data. Never expose your API keys or any secrets in your front end, securely store them server side and environment files. Then as you scale focus on the basics. Cash repeated requests with red is move heavy tasks like email sending, AI requests, PDF parsing into a synchronous jobs. And finally load test before launching. Shipping the app is one thing, making sure it doesn't fall apart when users actually use it is the more important part.