Your OrderService saves to Postgres and publishes to Kafka — two systems, no shared transaction. There is no safe order to do them in. The outbox pattern makes the write atomic and lets the broker catch up. Here's how, with the relay tradeoffs and the guarantees you actually get.
How to migrate a Spring Boot microservice fleet from Java 8 to Java 17 without downtime — the four layers, the order, the land mines, and the metric.
Click 'pay' twice when the page hangs and you shouldn't get charged twice. Here's how to make that promise — with one Redis key, a TTL, and a small race-condition guard.
Content Security Policy is the spam filter for your HTML — it tells the browser which scripts are allowed to run. The default examples don't work with Tailwind, Next.js, or third-party scripts. Here's the configuration that does.
What if the form just called your function — no fetch, no JSON, no route file? After six months of shipping server actions in production, here's where they win, where they don't, and how I decide which to use.
You can't shut the kitchen down for six weeks while you remodel — there are still customers eating. Here's how I replaced a legacy CRM piece-by-piece, kept the lights on, and slept at night.