Queues, streams and the consumers that read them
Queues forget messages, streams keep them, and the way you consume them decides whether you keep the order, the scale or most of both.
Software, mostly
Modesto San Juan
I write about software development. Not often: only when I feel like it and when I think I have something worth sharing.
Recent
Latest posts
November 4, 202611 min
Who owns the story? Commands, events and bounded contexts
Commands and events travel through the same pipes, but they differ in intent, audience and, above all, in who owns the contract. Event Storming helps you find the stories your business tells, and bounded contexts tell you who owns each one.
October 28, 20269 min
You don't need a harness
Why "you don't need a harness" makes sense for someone working on frontier models, but not as general advice, and which parts of a harness are worth keeping.
October 24, 202612 min
Discovering legacy software with AI
Sometimes we don't need ultra-sophisticated machinery to run a discovery exercise on legacy software, and AI can be a great help.
October 23, 20269 min
The Event Dilemma: Do's and Don'ts
Events can reduce coupling, absorb load and help systems scale, but you pay for them in complexity.
June 24, 202619 min
Where do good development practices stand in the age of AI?
We picked practices by weighing cost against benefit, and AI has changed both sides of the scale. A tour of which practices get cheaper, which feed the model's context and tools, and where to be careful.