The `curl` response shows `Host: example.com` and `X-Forwarded-Proto: http` after the request passes through Nginx. I find the forwarded headers useful because they make that handoff visible in the app’s response. Follow the `example.com` request through Nginx to Node. See…
When Heroku restarts a Node web process after 60 seconds, the `R10` line is the clue that catches your eye. I like that it points to the listener’s deadline rather than pretending to identify the cause. The timeout names a…
If a project that ran fine last month suddenly dies with ReferenceError: primordials is not defined, you are almost certainly running an old Gulp 3 setup on a modern Node.js version. The error looks like Node.js is broken. It is…
Your package.json file can pin the Node.js version a project needs, and npm checks it on every install. The engines field holds that version, and one line in .npmrc makes npm enforce it instead of just warning. Why Define a…
ChatGPT does not read text as a stream of whole words. It turns your prompt and its reply into tokens, which are recurring pieces of characters such as a word, part of a word, punctuation, or a space-plus-word combination. What…
An artificial intelligence (AI) agent does more than generate an answer. It works toward a goal, chooses steps, uses permitted tools, checks the result, and decides what to do next. I checked that definition against OpenAI and IBM’s agent documentation…
Reinforcement learning from human feedback (RLHF) turns human judgments about model responses into a training signal, and OpenAI documented it as part of the original ChatGPT training pipeline. People do not approve every answer you receive because their earlier demonstrations…
Prompt engineering changes the instructions sent to a large language model (LLM), and fine-tuning changes the model through additional training. Your safest default is to improve the prompt and measure the result first, then fine-tune only when a stable task…
I checked the public DeepSeek-V3 technical report because it gives an inspectable Mixture of Experts (MoE) example: the model has 671 billion main-model parameters, but its active path uses 37 billion parameters for each token. DeepSeek can keep a large…
BLACKBOX AI gives you a browser app, a Visual Studio Code agent, a command-line interface (CLI), and an application programming interface (API), so this guide uses the current marketplace listing, official pricing, and a JavaScript acceptance test run with Node.js…
