https://defendi.dev/blog/ Writing on architecture, AI delivery, developer experience, and technical communication. en https://defendi.dev/blog/architecture-rules-a-linter-cant-check https://defendi.dev/blog/architecture-rules-a-linter-cant-check Architecture I checked Cal.com's own documented architecture rules against their code, then pointed the same tool at a problem no linter can see: code that means two different things. Mon, 22 Jun 2026 00:00:00 GMT https://defendi.dev/blog/pr-review-is-not-an-architecture-review https://defendi.dev/blog/pr-review-is-not-an-architecture-review Architecture PR review is a code quality tool. Treating it as architecture enforcement isn't a discipline problem — it's a mismatch between what the tool can see and what enforcement actually requires. Tue, 19 May 2026 00:00:00 GMT https://defendi.dev/blog/bit-rot-is-not-a-metaphor https://defendi.dev/blog/bit-rot-is-not-a-metaphor Architecture You can write a perfect ADR and in 18 months nobody follows it. The question is not how to document better. It is what you do with the documentation after it is written. Wed, 06 May 2026 00:00:00 GMT https://defendi.dev/blog/coupling-rate-problem https://defendi.dev/blog/coupling-rate-problem Architecture GitClear's data shows code cloning is up while refactoring is down. That matters because duplicated code creates coupling, and refactoring is the work that forces teams to reconcile it. Wed, 15 Apr 2026 00:00:00 GMT https://defendi.dev/blog/implicit-coupling-llm-assisted-development https://defendi.dev/blog/implicit-coupling-llm-assisted-development AI & Engineering I ran three experiments with Claude Code (Opus 4.6) and Codex (GPT-5.4 xhigh) — greenfield creation, extension, and brownfield detection. The conclusion: implicit coupling is a maintenance problem, not a generation problem. Wed, 08 Apr 2026 00:00:00 GMT