ddia-systems skillA
ddia-systems is agent-read markdown (skill) from wondelai/skills: Design data systems by understanding storage engines, replication, partitioning, transactions, and consistency models. Use when the user mentions "database choice", "which database should I use", "SQL or NoSQL", "replication lag", "partitioning strategy", "consistency vs availability", "stream processing", "ACID transactions", "eventual consistency", "my queries are slow at scale", or "data is inconsistent across replicas". Also trigger when choosing a datastore, designing data pipelines, or deb.
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
mdr add wondelai/skills/ddia-systems@v1.4.0mdr add wondelai/skills/ddia-systems@sha256:cdcd71bc1ce854f0Pin 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.
[](https://markdownregistry.com/a/art_w7pxg5js5bhic7jt)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.4.0 latest | 2026-06-30 | 0dea03f | 16,784 B | A | view · diff |
| v1.3.0 | 2026-06-24 | 5356d12 | 17,166 B | A | view · diff |
| v1.2.0 | 2026-06-10 | 968c871 | 17,079 B | A | view · diff |
| v1.1.0 | 2026-04-05 | 4d32253 | 20,100 B | A | view · diff |
| v1.0.0 | 2026-02-23 | 79593e3 | 19,905 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (16784 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
wondelai/skills · 2,115 stars · license MIT · pushed 2026-08-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_w7pxg5js5bhic7jt GET https://markdownregistry.com/api/v1/resolve?ref=wondelai/skills/ddia-systems GET https://markdownregistry.com/api/v1/blob/cdcd71bc1ce854f04921c5ff1a63b06872f96b09ef2f0576c91a33ffc8297012