Series
Architecture Dojo is a recurring session at AWS Summit Japan where we put architecture challenges from production systems on stage and work through their trade-offs live. These posts carry what each session settled: what the design was optimizing for, what it gave up, and what would change the answer.
Every architecture decision is a bet. A bet that your constraints won't change, that your assumptions will hold, that the trade-off you're making today won't haunt you in two years. Since 2022, I've b
Some incidents look minor on paper. A small single-digit percentage of instances affected, in a single AZ. And yet the user-visible outcome is that more than half of the service's transactions stop wo
On stage, you declare a design correct. In production, you find out what that correctness was quietly resting on. In 2022, at the first Architecture Dojo at AWS Summit Japan, I stood on stage and led
The AI era changes exactly one thing about architecture. The component at the center of your system is now probabilistic. Everything else, the discipline of starting from the problem, naming constrain
