Production-grade engineering for full-stack JavaScript developers who want to think like architects — React, Node, software architecture, and building real AI systems. No fluff, every week.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 95 | Founded | 4 years ago | Last Issue | 5 days ago |
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The 3 Layers of Testing AI Agents
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The first time someone on the team asks: "How do we test the agent?", the room splits into two wrong answers.
One camp says you can't, it's non-deterministic, we...
Don't Start With Multi-Agent AI Systems
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We've run this movie before.
A monolith gets uncomfortable, a conference talk says the future is lots of small services, everyone splits everything, and two yea...
Your Agent Isn't Dumb. Your Tools Are.
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When an agent misbehaves, everyone stares at the prompt.
Add another "IMPORTANT:", beg the model in capital letters, ship it, and hope.
Most of those bugs aren...
Stop Throwing new Error(). It's Lying to Your Logs.
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A user types their email wrong.
Your API fires back 500 Internal Server Error.
A log line lands at error level, and someone on call gets paged over...
Your useMemo Probably Isn't Doing Anything
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I’ve reviewed React PRs where useMemo shows up without any concrete reason, just in case. I understand the instinct. Re-renders feel scary when you can’t...
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Authors
The writers behind this newsletter.
Senior Software Engineer | Practical React, Node, and Software Architecture Tips \ud83d\udd25 | Author of “The Conscious React” book ⚛️
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