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Practical guides on the tools developers use every day — JSON, regex, JWT, cron, and more.

2 posts matching

August 20, 20264 min read
Connection Refused vs Timed Out: What a Port Checker Is Really Telling You
Two different failure modes, two different root causes. Here's how to read a port check result correctly.
networkingdevopsdebugging
June 12, 20266 min read
HTTP Status Codes Developers Mix Up Most Often
401 vs 403, 404 vs 410, 502 vs 504 — a short field guide to the codes that cause the most API confusion.
httpapisdebugging

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