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Writing

I write about the systems I build and operate: integration contracts, incident recovery, platform decisions, and the evidence behind them.

Method

The method behind the writing

The principles and playbooks the posts and case studies are tagged with, and reading paths through them.

  1. Principles

    The cross-cutting ideas each post and case study is tagged with.

    6principles

  2. Playbooks

    Processes a team can adopt, with inputs, an owner, steps, checks, and a handoff.

    4playbooks

  3. Reading paths

    Ordered sequences through the archive, each aimed at one goal.

    4paths

  4. Browse by topic

    Every post and case study with its principle and playbook tags, filterable by either.

    20pieces

Delivery write-ups

Case studies

Delivery write-ups with metrics, stack choices, and the tradeoffs that mattered.

  1. 5 min read

    Healthcare

    Patient Matching When the API Contract Is Ambiguous

    A de-identified field pattern for containing patient-match risk when filter and mode parameters interact in undocumented ways.

    From the study, as written Sep 12, 2026

    Observed Conflict
    2 parameters
    Auto-link Policy
    Fail closed
    Regression Proof
    Pinned fixtures

    Status: Completed

Field notes

Blog

Technical notes, incident lessons, and implementation patterns worth keeping.

Writing | Cody Blevins