Prompt Engineering
& LLM Guides
Practical guides on writing better prompts, cutting token costs and building with LLM APIs, for ChatGPT, Claude and Gemini users.
Node.js Nov 11 Security Release: Prep Checklist
Node.js ships a HIGH-severity security release on Nov 11, 2026. What's confirmed, and a script to find every pinned version.
Fix Node.js MaxListenersExceededWarning
Node's MaxListenersExceededWarning means a listener is piling up somewhere. Here's how to find and fix the real leak instead of raising the limit.
Exponential Backoff for OpenAI API Calls
How to implement exponential backoff with jitter for OpenAI API calls in Node.js, and why queue concurrency matters more than your retry formula.
Fix CORS Errors in React and Node.js Apps
Fix CORS errors between React and Node.js for good: explicit origins, preflight handling, and the credentials mismatch that breaks auth requests.
AI Prompt to Fix a Flaky CI Test
A practical AI prompt for diagnosing a flaky CI test fast, so you find the real race condition causing it instead of adding another retry or timeout.
AI Error Summarization for Node.js APIs
How to add AI error summarization to a Node.js API the right way: background queue, Slack alerts, and no blocked requests when OpenAI is slow.
console.log vs debugger in Node.js
console.log vs debugger in Node.js: when print debugging is fine, when breakpoints actually save you time, and the workflow I use on client projects.
Connection Pool Exhaustion: The Real Fix
Database connection pool exhaustion causes hanging requests and timeouts under load. Here is what actually causes it and how to fix your pool setup for good.
Debug a Node.js Memory Leak with AI
A practical AI prompt that uses a real heap snapshot retainer path to actually find a Node.js memory leak instead of just confirming one exists.
Stay ahead of the curve
Get the latest prompt engineering strategies, token optimization tricks, and platform updates delivered straight to your inbox once a month. No spam.