The payment provider fails. Your checkout counter keeps rising. The dashboard looks healthy. The trace contains a checkout span, but the payment call sits in another trace. And somewhere in the exception data, a customer email has slipped into your observability platform. The application may have passed its functional tests. Read more
Research date: September 27, 2026. An architecture guide with an executable Java 21 example. A customer writes: “My payment failed, and now I cannot log in.” Should that ticket go to billing or technical support? A language model can suggest a queue, but your application still has to decide whether Read more
Engineering analysis — September 27, 2026. Based on the Spring AI milestone released September 25. An enterprise search application can accept every vector, return plausible results, and still be wrong. The dangerous case is not necessarily a malformed request. It is a successful import of vectors that belong to a Read more
GPT-6 Sol and Luna shift the question from which model is best to which model is justified for each task. Build a policy-driven router in tested Java.
AI agents can now discover services and pay onchain. Learn what ERC-8004 and x402 solve, where trust still fails, and build a tested tamper-evident interaction receipt.