build.allanninal.dev

Diagrams of small cloud systems.

Notes on automations, DevOps, and infrastructure — each post centered on a diagram. By Allan Ninal.

Series · AWS autoposting

  • A Facebook autoposting system on AWS for $2–$5 a month

    Part 1 of 6 · ~5 min read

    A scheduled Facebook poster that stays on-topic, answers questions correctly from a Google Drive knowledge base, and doesn’t surprise you with a huge cloud bill. The whole system on one page.

  • How code becomes a working system

    Part 2 of 6 · ~3 min read

    Push to GitHub, walk away. The cloud handles the rest — and never holds a long-lived password.

  • How a post actually goes out

    Part 3 of 6 · ~4 min read

    Five quick checks between “it’s time” and “post is live.” Cheap gates first, expensive gates only when needed.

  • How the Drive folder powers everything

    Part 4 of 6 · ~4 min read

    The client edits a Google Doc. The system updates itself — with a safety layer that keeps the old version live if anything looks broken.

  • How replies work without making things up

    Part 5 of 6 · ~5 min read

    The bot answers from the client’s docs only — or escalates to a human. Citation required, no exceptions.

  • What this all costs

    Part 6 of 6 · ~3 min read

    A coffee a month, not a Netflix subscription. Line by line, where the dollars actually go.