Top 10 Code Review Mistakes That Let Performance Issues Slip

If you’re a technical leader, a development manager, or a DevOps engineer, you already know the sinking feeling. It’s that moment when your new feature gets pushed to production, only to cause a cascade of slow loading times, timeout exceptions, or sudden memory spikes. The application, which looked perfect in staging, is now sluggish, frustrated customers are complaining, and your system feels fragile. What went wrong? Chances are, the fault lies not just in the code itself, but in the process