Hello, world: why I am writing

This is the first piece on the site. The idea is simple: learning in public. Each post is something I studied, broke, fixed or designed — written for the Danilo of six months from now and, with luck, useful to you too.

What’s coming#

• System design — real trade-offs: consistency, idempotency, queues, locks.
• Java & Spring — what happens underneath @Transactional.
• Go — concurrency without drama and idiomatic code.
• AI in engineering — agents, incident auto-remediation and LLMs in production.
• Learning — how I organize my routine, what worked and what didn’t.

A little taste#

In Go, a worker pool fits in a few lines:

func worker(jobs <-chan int, results chan<- int) {
  for j := range jobs {
    results <- j * 2
  }
}

And in Java 21, virtual threads make blocking code cheap again:

try (var executor = Executors.newVirtualThreadPerTaskExecutor()) {
    IntStream.range(0, 10_000).forEach(i ->
        executor.submit(() -> Thread.sleep(Duration.ofSeconds(1))));
}

Comments are down below — feel free to use them.