Foojay Podcast #84: Developing Performant, Cost Efficient, and Eco-friendly Code

Mon, 01 Dec 2025 06:43:36 +0000

In this Foojay Podcast, we’re exploring a critical topic that’s becoming increasingly important in our industry: developing sustainable software that is both performant and environmentally friendly.

At the Devoxx and JFall conferences, I had fascinating conversations about how we as Java developers can make a real impact on both our cloud costs and our carbon footprint. And it’s interesting to learn how these two goals are often perfectly aligned: what’s good for your budget is usually good for the planet too.

The Art of Performance Tuning: Why Saving 30% in the Cloud Means Nothing if Your Code Wastes 1000× More

Tue, 25 Nov 2025 06:46:00 +0000

The Hidden Cost of “Good Enough” Code

A few weeks ago, Kirk Pepperdine published a fascinating performance challenge — a small Java code snippet that appeared trivial but produced puzzling runtime behavior.

He invited readers to take a shot at solving it. If you haven’t seen it yet, stop here for a moment and try it yourself — and when you’re done, check his Kirk’s official solution

When I saw it, I thought it would be a fun exercise to revisit some fundamentals — but the deeper I went, the more I realized it wasn’t just about performance. It was about how we think.

Daniel Witkowski on foojay.io - Friends of OpenJDK

Foojay Podcast #84: Developing Performant, Cost Efficient, and Eco-friendly Code

The Art of Performance Tuning: Why Saving 30% in the Cloud Means Nothing if Your Code Wastes 1000× More

The Hidden Cost of “Good Enough” Code