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View all articles →Catastrophic Backtracking: How One Regex Can Take Your Site Down
What ReDoS actually is, why backtracking regex engines explode exponentially, how to spot vulnerable patterns before an attacker does, and the fixes that work - from pattern rewrites to linear-time engines like RE2.
Cron Job Not Running? A Field-Tested Debugging Checklist
A step-by-step checklist for diagnosing cron jobs that never fire, fail silently, or run at the wrong time. Covers logs, environment differences, the % gotcha, missing newlines, DST skips, and how to make the next failure impossible to miss.
GEO in 2026: Getting Cited by AI Answer Engines
Generative Engine Optimisation explained for developers: how to get cited by ChatGPT, Perplexity, Claude and Gemini. Covers llms.txt, AI-crawler access, content chunking, citation density, recency, and measuring share of voice across engines.
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