writing · for developers
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Deep dives, references, and cheatsheets. Written by developers, for developers.
REFERENCE
HTML Entities vs Unicode Escapes: When to Use Each
HTML entities and Unicode escapes both encode characters — but in completely different contexts. Complete guide with examples.
DEEP DIVE
Regex Performance: Catastrophic Backtracking Explained
How backtracking turns a millisecond regex into a minute-long hang. Patterns to avoid and how to fix them.
COMPARISON
UUID v4 vs v7: When to Switch (and When Not To)
UUID v4 vs v7: compare randomness, sortability, and performance tradeoffs.
DEEP DIVE
What is UUID v7
UUID v7 is the new time-sortable UUID standard. Learn why it matters.
DEEP DIVE
Base64 Explained
What Base64 actually is, how it works, what it is not.
DEEP DIVE
JWT Structure: A Visual Guide
Decode any JWT. Understand the parts.
REFERENCE
Cron Syntax Cheatsheet
Every cron pattern you will ever need.
COMPARISON
JSON vs YAML: When to Use Which
Two formats, one job. Understand the tradeoffs.
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