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HeapOfCode 🇺🇦🇺🇸

66 members
29 July 2026
Rick Sanchez
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8 Node.js Patterns That Made My Backend Services Handle Real Production Traffic Worked perfectly with ten users, collapsed with a thousand — these patterns fixed every single bottleneck.Continue reading on JavaScript in Plain English » 🚀 Dive deeper into the story ➡️️ #backend #nodejs #javascript #javascriptframeworks #javascripttips
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I built 700+ free calculators — here’s what I learned about formula accuracy and why most… Most calculator sites show you a result and send you away. 🚀 Dive deeper into the story ➡️️ #webdevelopment #health #javascript #tools #finance
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useEffect, useMemo, and useCallback: Three Hooks, Three Jobs (Stop Swapping Them) A practical guide from someone who wires all three into the same custom hook and still has to remind himself which one does what. 🚀 Dive deeper into the story ➡️️ #reacthook #webdevelopment #react #frontenddevelopment #javascript
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The indexer that reindexed everything How a 30-minute audit cut our Magento reindex triggers by 70% — and a playbook you can run on Monday morningContinue reading on Level Up Coding » 🚀 Dive deeper into the story ➡️️ #performance #php #webdevelopment #magento #softwaredevelopment
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CORS Explained — No More Googling the Same Error You’ve seen it before. 🚀 Dive deeper into the story ➡️️ #softwareengineering #javascript #webdevelopment #websecurity #api
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What Fivetran Software Engineer- II loop actually tests (a round-by-round breakdown) Most Software Engineer II prep assumes two things that turned out to be wrong for this loop: that you’ll be thrown LeetCode Hards, and… 🚀 Dive deeper into the story ➡️️ #javascript #backend #softwareengineering #systemdesigninterview #interview
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The btoa() Security Trap: Why Your localStorage “Encryption” Is Actually Malware Pattern The btoa() Security Trap: Why Your localStorage “Encryption” Is Actually a Malware Pattern 🚀 Dive deeper into the story ➡️️ #javascript #softwareengineering #webdevelopment #technology #cybersecurity
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Stop using AbortController in Isolation: Clean Up Multiple Signals with React and AbortSignal.any() To prevent orphaned network requests or leaking background resources in React, we must clean them up when a component unmounts. Modern… 🚀 Dive deeper into the story ➡️️ #frontend #webdevelopment #softwareengineering #javascript #react
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tsconfig.json in Angular: Every Setting Explained Part 3 of the “Angular, Decoded” series 🚀 Dive deeper into the story ➡️️ #javascript #frontenddevelopment #webdevelopment #angular #typescript
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