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Original rewrites on React, Node.js, TypeScript and AI — practical notes from the same engineering practice behind our operator software. Article bodies are in English.
Tagged: Debugging
Structured Logging in Node.js: Turning Production Debugging Chaos into Clarity
Learn why console.log fails in production Node.js apps and how structured logging, log levels, and correlation IDs turn hard bugs into fast fixes.
1912 wordsRead articleFinding the Real Bottleneck in a Slow Node.js Endpoint
Learn a systematic method for tracing backend latency through the request path—from Node.js code to database queries—using timing and EXPLAIN ANALYZE.
1671 wordsRead articleCommon async/await Misconceptions That Cause Production Bugs
Explains nine subtle async/await misunderstandings—from race conditions to unhandled rejections—that silently break real-world JavaScript applications.
3620 wordsRead articleFive Deceptive Node.js Bugs That Pass Code Review Unnoticed
Walk through five real-world Node.js bugs involving forEach, floating promises, and shallow copies to learn why code that runs fine can still fail in production.
1485 wordsRead article
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