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News
Next.js Bot Detection: Block AI Crawlers at the Edge
9+ min ago (1057+ words) Your Vercel usage graph is climbing and your logs are full of names you did not invite: GPTBot, ClaudeBot, PerplexityBot, Bytespider. They hammer your App Router pages and quietly run up your bandwidth and compute bill. The reflex is a…...
My determinism check can only test one producer in seven, and the print says so
9+ min ago (545+ words) I added a check that asks one question: run the thing that produces this record twice, and do you get the same bytes? One of seven. That number is not a coverage gap I plan to close. It is the…...
🤖 How Backend Engineers Are Building AI-Powered Applications in 2026
19+ min ago (116+ words) AI isn’t only about training models. For backend engineers, the real challenge is building reliable systems around AI. A typical AI-powered backend might look like: 🌐 Client → sends request ⚙️ Backend API → validates & processes it 🤖 LLM → generates the response 🗄️ Database → stores application…...
A question on Discord found two bugs in my RAG system. Fixing them found a third.
24+ min ago (611+ words) Every test passed. The tests had the same blind spots as the code. A developer saw Ossian's MCP... Tagged with rag, kafka, ai, opensource....
Polar sandbox vs live webhooks — why checkout works and entitlements do not
45+ min ago (794+ words) Checkout can succeed and your app can still treat the buyer as a free user. On Polar that usually means the webhook landed in the wrong world — sandbox secret on a live deploy, production endpoint still pointed at last night’s…...
My release smoke test passed on the message that says it failed
43+ min ago (607+ words) Here is the step, as it had been since the first release: Read the last line on its own. It passes when the released version appears anywhere in the output. Now read what npm prints when the version is not…...
tracehub-mcp: Giving AI Assistants a Real Query Interface Into Your LLM Traces
34+ min ago (102+ words) The Copy-Paste Problem Here's what debugging an LLM application looks like for most... Tagged with aiengineering, mcp, observability, opensource....
I Replaced My TTS Engine. The API Call Was the Easy Part.
1+ hour, 13+ min ago (1051+ words) Katto already had AI dubbing. A creator could take a short clip, choose a language, and get a translated version back. The first version used Kokoro and covered eight languages. Recently, I moved the primary speech engine to Google Cloud…...
TACACS+ Failover Testing: Rejection, Outage, and Recovery Are Different Tests
1+ hour, 17+ min ago (1131+ words) A TACACS+ rollout needs more than a successful login. Test what happens when one server is unavailable, when none can answer, and when the service returns. For each state, check who authenticated the user, what the user could do, and…...
Your primary key shouldn't be in the URL
1+ hour, 37+ min ago (169+ words) A sequential integer primary key is a great internal identifier: compact, fast to index, naturally ordered. It is a poor external one, for three reasons: The fix is to stop making one column serve two audiences: Every lookup still has…...