/tags/testing/ Recent content in testing on The Joko Engineering Blog Hugo -- gohugo.io en-us This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Fri, 31 Jul 2026 00:00:00 +0000 /posts/migrating-business-critical-code-safely-with-golden-master-logs/ Fri, 31 Jul 2026 00:00:00 +0000 /posts/migrating-business-critical-code-safely-with-golden-master-logs/ At Joko, one of my main roles is to take care of the system that is at the heart of our business model and currently generates tens of millions in revenue per year. It’s a system that has been in place since the very beginning of Joko and that has proven itself over time. It’s a system that works. OK, but if it works, what is it exactly that you do?