17 September 2026
My blog counter went through three implementations in a week: fetching the whole article list to count it, a dedicated count endpoint that still cold-started the backend, and a Cosmos DB Change Feed keeping a Cloudflare KV value current so the read never touches origin. Plus a debugging story about one secret with three different names.
10 September 2026
How I added a moderated comment system to this blog: Cosmos DB's own Change Feed as the queue, an Azure Function scoring comments via Cloudflare Workers AI, least-privilege RBAC kept out of the CI pipeline on purpose, several real bugs found the hard way in production, and a mid-flight model upgrade after the small LLM proved unreliable.