system-design-data-architecture skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, same audit grade.
system-design-data-architecture is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: Choose and scale the data layer: SQL versus NoSQL per access pattern, single data ownership, replication and read scaling, partition key choice, hot partition and celebrity key mitigation. Use when selecting a store, planning sharding, or fixing a data-tier bottleneck..
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.
What the file says
# Data Architecture ## **Priority: P1 (HIGH)** Access patterns choose the store. Ownership precedes schema. Shard last, not first. ## Store Selection 1. List every read and write access pattern with its QPS, latency target, and consistency need. 2. Default to a relational store. It wins until a specific pattern proves it cannot serve. 3. Move a pattern to a specialized store only when the relational store fails that named pattern: key-value for hot lookups, wide-column for massive ordered writes, document for schema-variant aggregates, graph for multi-hop traversal, search index for text and facets, object store for blobs. 4. Every additional store adds sync lag, dual-write risk, and one more operational surface. Justify it. 5. Blobs never live in the primary database; store bytes in object storage and keep the reference. ## Ownership and Consistency - One writer owns each entity. Cross-service reads use an API or an event stream, never a shared table. - Classify each flow before choosing replication: money, stock, and identity need strong consistency; feeds, counters, and analytics tolerate eventual. …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/system-design-data-architecture@git:20260830.00e03f4mdr add hoangnguyen0403/agent-skills-standard/system-design-data-architecture@sha256:fd5551c23036060fPin 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_j6bd5o24neumgel3)
1 badge views in 30 days
Versions
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 (3640 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
hoangnguyen0403/agent-skills-standard · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_j6bd5o24neumgel3 GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/system-design-data-architecture GET https://markdownregistry.com/api/v1/blob/fd5551c23036060fe88df59e9545f65d40e9db762e86663c26f7476aebd61daf
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
More from hoangnguyen0403/agent-skills-standard
Every file in hoangnguyen0403/agent-skills-standard