Have you ever consider what’s better: multiple smaller kafka topics, or one big topic that aggregates messages?

What is a difference between flatMap and concatMap? It’s really, important to understand a difference. I’ll try to explain it as simple as possible.

If statements are probably the most common thing that makes your code spaghetti. I’d like to share a few techniques that can help you make your code more readable.

How to write good unit tests? There is no one golden answer. Today I will tray to show you a few unit testing tips&tricks.

What about NgZone, and ngrx? NgZone issues are not ease to catch. The only sign of failure is “from time to time UI is not updated at this place”. Ngrx since version 9 comes with a really nice feature to hunt these bugs down.