Psst, hey you. Yeah, you. Have you seen this chart?

Every software engineer worth their salt should remember this bad boy. It's all about Big O concepts, which are super important, especially when designing APIs.
That's it. That's the tweet.
But seriously, Big O notation is key for understanding how algorithms scale and how much computational resources they'll need. So if you want to avoid having your app turn into a slow, bloated monster, make sure you keep Big O in mind when designing your APIs.
And don't worry if you don't quite get it at first. It can be a little intimidating, but with some practice, you'll be able to nail down those time and space complexities like a pro.
So go forth, young padawan, and may the Big O be ever in your favor!