6+ hour, 12+ min ago   (407+ words) The promise I'd made myself at the start was the discipline that kept the migration honest: external domains and ports stay unchanged, and the reverse proxy stays the anchor. Move a service in, get it working on k3s, then repoint the…...

21+ hour, 33+ min ago   (111+ words) Every multi-agent tutorial shows "Agent A talks to Agent B." None show how to keep that conversation reliable at scale. Every agent in AgentForge declares its input schema: The orchestrator validates before execution. If agent A's output doesn't match agent B's…...

1+ day, 14+ hour ago   (209+ words) Originally published at bitsar.net. Twelve pods, one Redis, and @Cacheable(sync = true) on the method. I read that as a protected endpoint. It coordinates callers inside one JVM, so a cold key was still twelve calls to the same…...

4+ day, 3+ hour ago   (272+ words) Ruby を書いていると必ず出てくる「ブロック」と「yield」。 難しく見えますが、要は 「処理を渡す」「渡された処理を実行する」 だけです。 ブロックとは メソッドに渡す「処理のかたまり（コードの切れ端）」 のこと。 { } か do...end で囲みます。 [1, 2, 3].each { |n| puts n } # └──────────┘ これがブロック.each に「各要素で puts n してね」という指示書を渡しています。 1 2 3 { } と do...end は同じもの。長いときは do...end を使うだけです。 [1, 2, 3].each…...

4+ day, 19+ hour ago   (1009+ words) I needed to answer one question automatically: what is this second-hand thing worth? Not "what are people asking" — what did one actually sell for, recently, with a date attached. That turns out to be one of the most locked-down pieces…...

4+ day, 21+ hour ago   (789+ words) A join is how you ask one question across two tables. The database keeps patients in one table and... Tagged with sql, postgres, database, beginners....

5+ day, 21+ hour ago   (683+ words) The first time a database migration broke on me in production, I found out from a user. Not from a dashboard, not from a Slack alert, not from anything I built. A user filed a ticket saying the orders page…...

1+ week, 1+ day ago   (328+ words) If you have ever built an address form, shipping calculator, or travel app, you know the struggle: you need a reliable way for users to search for their city or state, but you do not want to maintain a multi-gigabyte…...

1+ week, 3+ day ago   (690+ words) Short answer: keep an invitation in a pending state, verify the claimant's identity, and create the user record only after that proof succeeds. For a B2B SaaS product, make the same state machine own deletion: a GDPR delete must revoke every…...

1+ week, 3+ day ago   (428+ words) Secrets management is one of those decisions you make on day zero and regret in month six if you get it wrong. Pick the wrong store and you'll either rewrite your bootstrap code later or pay thousands a year for…...