When building a NestJS application, it’s not enough for it to just work, it needs to be fast, efficient, and stable. To achieve that, we must go through profiling, the process of understanding how our app behaves internally execution times, memory us...

In any real-world backend application, proper error handling is essential. It ensures that your system doesn't crash unexpectedly, responds clearly to clients, and makes debugging easier for developers. Luckily, NestJS provides powerful tools to do t...