Ashwin Gopalsamy | Substack

Ashwin Gopalsamy Podcast

Sharing experiences and expertise in Go, backend engineering, cloud-native architectures and building distributed software systems.

Recent posts

Go was never bad.

You just weren’t building the right stuff.

Jun 21 • Ashwin Gopalsamy

Using Tolerance while testing floating-point comparisons in Go

Last Tuesday, I was knee-deep in a financial calculation service when my tests started failing in the most spectacular way.

Aug 17 • Ashwin Gopalsamy

Runes, Bytes and Graphemes in Go

In Go, strings are bytes, runes are Unicode code points, and graphemes are what users actually see. Pick the right one before slicing, counting, or…

Aug 9 • Ashwin Gopalsamy

Go’s Resizable, Bounded Stacks

Goroutines aren’t cheap. They’re just deceptively well-packaged. Lets dive into some of its foundations.

Jun 8 • Ashwin Gopalsamy

Scheduler & Infinite Loops in Go

Goroutines are great; until they’re not. In performance-critical paths, a tight infinite for can outperform due to zero scheduling overhead. Know when…

May 24 • Ashwin Gopalsamy

13:18

Review Your Own Pull Request First!

Reviewing your own PR before sharing it with colleagues is crucial. Helps you catch mistakes such as typos, logic gaps and design issues early…

May 20 • Ashwin Gopalsamy