Alex Buznik

13 painful lessons I learned building fast React apps (number 9 is my favorite.) 1. "It works" is not the same as "it scales." 2. Clear naming > clever naming. Always 3. Reusability speeds up development time. 4. Don’t chase perfection → ship, test, improve 5. Always build on core concepts → not just code 6. You’re not done after building → test real usage 7. Global state isn’t always the answer → start local 8. UI logic and business logic don’t belong together 9. Component structure determines debugging speed 10. State management should be boring → not confusing 11. Data fetching needs its own strategy → not just useEffect 12. Use tools because they're performant → not just popular 13. Performance issues usually come from poor architecture, not React itself I’ll break down 7 of these in the 📌 comments. Repost this free value for your team or other devs ♻️ P.S. Which one (1-13) resonates with you the most?

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When developers use "tech debt" to refer to any code that they didn't write (and some they did), how do you decide where to invest? I find this 2x2 quite helpful for framing the discussion. In many situations, the trouble with debt is not the principal, it's the interest. When it comes to technical debt, that's the increase in the cost of change that's created by the debt. And you're not really required to pay until you're working in that area. The axis for "ease of change" includes everything it takes to get a change into production. Is the code easy to reason about? Do you trust the tests? Is the pipeline fast? Anything that makes it harder is bad. However, if the system or component isn't undergoing change, it's not hampering your business as badly. Hence the need to incorporate "desired rate of change." In other words, if we could, how much work would we be doing in this area? If something is slowing you down or blocking you in an area of your system that presents critical opportunities to your business, it's probably time to get it cleaned up. Like any 2x2, it's pretty simple. But I assure you someone, somewhere, is arguing right now about how to improve a thing that's already good and pretty stable. PS. I used this chart in a workshop at LeadDev's LDX3 and it led to some great discussions. If you'll be at LeadDev in NYC or Berlin this year, come have a chat. The workshop will be repeated at both.

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💡 ECMAScript 2025 is officially out I’ve been reviewing the spec this week, and some of the additions are genuinely useful, especially regarding iterators and sets. JavaScript now supports .map(), .filter(), .take(), and .drop() directly on iterators. No more converting to arrays to do a simple transform. It’s lazy, chainable, and finally feels like it’s catching up to modern expectations. Iterator.from(NodeList) will also clean up many DOM patterns. Combine it with .toArray() and you’ve got a flexible pipeline without losing performance to unnecessary allocations. 🧩 The new Set methods are also solid: ✅ union, intersection, difference—finally native 🧪 isDisjointFrom, isSubsetOf, isSupersetOf 🚀 JSON imports are safer now with { type: "json" }, and RegExp.escape() fixes a 15-year-old annoyance when escaping wildcards. And Promise.try()? Clean way to handle mixed sync/async logic in one wrapper It's one of those releases that feels like it's been a long time coming. 📎 Link to the full writeup in the comments 👇 (I've been writing about most of the features for the last year, subscribe to my newsletter to get cool insights before they become mainstream, link in comments) #JavaScript #ECMAScript2025 #Frontend #WebDevelopment #Standards #DevTools #CareerOS #ES2025

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🚀 New Release from ComfyUI - Subgraph Publishing & Selection Toolbox Redesign ComfyUI 0.3.63 update unlocks two powerful enhancements that make working with this tool even more fluid and modular: ✨ What’s New ⁉️ 1. 𝗦𝘂𝗯𝗴𝗿𝗮𝗽𝗵 𝗣𝘂𝗯𝗹𝗶𝘀𝗵𝗶𝗻𝗴 You can now save any subgraph as a reusable component in your node library. Use the publish icon or menu in the Selection Toolbox, then find it under Node Library → Subgraph Blueprints. When you need to tweak the behavior, just edit and update it like a regular node. This change elevates composability and reusability in your workflows. ComfyUI 2. 𝗦𝗲𝗹𝗲𝗰𝘁𝗶𝗼𝗻 𝗧𝗼𝗼𝗹𝗯𝗼𝘅 𝗥𝗲𝗱𝗲𝘀𝗶𝗴𝗻 The UI of the selection toolbox has been refreshed with clearer icons and an expandable menu. This redesign isn’t just aesthetic — it paves the way for future enhancements and more flexible workflows. ComfyUI Blog 🔍 𝗪𝗵𝘆 𝗧𝗵𝗶𝘀 𝗠𝗮𝘁𝘁𝗲𝗿𝘀 𝘔𝘰𝘥𝘶𝘭𝘢𝘳𝘪𝘵𝘺 & 𝘙𝘦𝘶𝘴𝘦: Subgraphs can now live as first-class entities—no recreating from scratch each time. 𝘉𝘦𝘵𝘵𝘦𝘳 𝘜𝘟: Cleaner UI and menu structure help speed up experimentation and iteration. 𝘌𝘹𝘵𝘦𝘯𝘴𝘪𝘣𝘪𝘭𝘪𝘵𝘺: The foundation is laid for even richer features down the line. As someone who values efficient, scalable design in creative and engineering workflows, I’m excited to see how this deepens what’s possible in ComfyUI. #ComfyUI #UIUX #subgraphs #ai #monks

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I put together a step-by-step guide to help you implement LLM Optimisation the right way for E-commerce. In this carousel, you’ll find the high-level overview. The full version includes: → How to generate a structured product feed (CSV, JSON, XML) with the right attributes: title, GTIN, MPN, price, availability, and product URLs → How to apply Schema . org Product markup using JSON-LD, with full code examples → How to configure your robots.txt to allow GPTBot, OAI-SearchBot and PerplexityBot access to your PDPs and feeds → How to prerender JS-heavy product pages using static snapshots or SSR → Where and how to submit your feed to Perplexity’s Merchant Program and OpenAI’s early access initiative → How to debug AI visibility using server logs, schema validators, and live prompt testing inside LLM tools If you’re working on e-commerce, SEO, or growth, this is where things are moving. 💬 Comment or DM me, and I’ll send you the full guide. 📌 Save this post if you're not ready yet but know you'll need it.

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Most people use vibe coding like this: - Write a bunch of code - Hope it works - Fix what's broken later - Repeat But that's like building a house: - Without blueprints - Without measurements - Hoping everything fits Here's the better way: 1. Start with tests Your tests are your blueprint. They guide every move. 2. Commit constantly Tiny changes. Micro commits. No big bang moments. 3. Pair up Two minds. One keyboard. Zero blind spots. 4. Follow the red-green cycle: - Write a failing test - Make it pass - Clean up Repeat forever. Why this works: - You always know it works - You catch issues early - You move faster (yes, really) - You sleep better at night The old way is dead. This is how pros build. Start today.

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