satbirbhbc-ux/ai-coding-principles · ddia-principles/SKILL.md

ddia-principles skillA

ddia-principles is agent-read markdown (skill) from satbirbhbc-ux/ai-coding-principles: Designing Data-Intensive Applications (DDIA) distilled reference guide by Martin Kleppmann. MUST be loaded when: designing database schemas, choosing storage engines, implementing replication or partitioning, handling distributed transactions, building batch/stream processing pipelines, choosing consistency models, implementing consensus, designing data flow architectures, evaluating trade-offs between availability and consistency, encoding/serialization decisions, data modeling (relational vs d.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add satbirbhbc-ux/ai-coding-principles/ddia-principles@git:20260323.933255a
Exact content
mdr add satbirbhbc-ux/ai-coding-principles/ddia-principles@sha256:3360b207b19359d1

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

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Versions

versioncommittedcommitsizeaudit
git:20260323.933255a latest2026-03-23 933255a 18,709 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (18709 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

satbirbhbc-ux/ai-coding-principles · 3 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yl2pbockivodiegn
GET https://markdownregistry.com/api/v1/resolve?ref=satbirbhbc-ux/ai-coding-principles/ddia-principles
GET https://markdownregistry.com/api/v1/blob/3360b207b19359d1bd58c59f427d724900054936a00074743b1faf6f4f3e8e3f

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.