ClaudSkills / Engineering / data-engineering

Ddia Principles

Q: What is a Claude Code skill and how does the Ddia Principles skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Ddia Principles is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: data-engineering · Last updated: 2026-05-21

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 document vs graph), building fault-tolerant systems, or any system design and architecture discussion involving data-intensive applications. Trigger on: database design, replication, partitioning, sharding, transactions, isolation levels, consistency, consensus, CAP theorem, batch processing, stream processing, MapReduce, Kafka, event sourcing, CDC, OLTP, OLAP, B-tree, LSM-tree, data warehouse, schema evolution, encoding formats, distributed systems, fault tolerance, leader election, quorum.

From the source SKILL.md

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What this skill does

Ddia Principles is a community-contributed Claude Code skill in the data-engineering sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ddia-principles/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Ddia Principles Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/ddia-principles
curl -L https://claudskills.com/skills/ddia-principles/SKILL.md \
  -o ~/.claude/skills/ddia-principles/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/ddia-principles/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/ddia-principles/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ddia-principles\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Ddia Principles Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/ddia-principles/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Ddia Principles skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Ddia Principles skill?

Use Ddia Principles when your Claude Code task falls under the Engineering category — specifically in the data engineering area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Ddia Principles" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Ddia Principles skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Ddia Principles is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/satbirbhbc-ux/ai-coding-principles/blob/HEAD/ddia-principles/SKILL.md
Author: satbirbhbc-ux

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

satbirbhbc-ux. (2026). Ddia Principles [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/ddia-principles/

BibTeX

@misc{ddia-principles-2026,
  author    = {satbirbhbc-ux},
  title     = {Ddia Principles [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/ddia-principles/}
}

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