Tools: Powerful 16 API Concepts You Need To Master

I still remember my first “real” system design interview. I was ready to code algorithms, but then the interviewer asked me how I’d handle a payment retry without charging the customer twice.

I froze. I knew how to write code, but I didn’t fully grasp the architectural glue that holds big systems together.

APIs look messy when you stare at a massive distributed system diagram. But here’s the secret: the whole thing usually boils down to a handful of core ideas.

Once you get these sixteen concepts down, you stop seeing “complexity” and start seeing patterns.

You can get the post as PDF file from https://10xdev.blog/16-api-concepts-you-need-to-master/

Whether you are preparing for a backend interview or trying to explain to a junior dev why we can’t just “return all the data at once,” this guide is for you.

This a breakdown of 16 essential API concepts every software engineer should understand, followed by clear explanations for each.

Let’s get into the mechanics of how modern systems actually talk to each other.

Before we worry about data formats or security, we have to decide how our servers are going to exchange information.

There isn’t a single “best” way, just the right tool for the job.

Source: Dev.to