ddia
DDIA is a community-maintained Chinese translation of Martin Kleppmann's 'Designing Data-Intensive Applications' book, hosted on GitHub. It provides free access to distributed systems and database design knowledge, with the second edition currently in progress (translated through Chapter 10).
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | Vonng/ddia |
| Owner | Vonng |
| Primary language | Python |
| License | CC-BY-4.0 — Requires review (not clearly OSI) |
| Stars | 23.2k |
| Forks | 4.5k |
| Open issues | 11 |
| Latest release | Unknown |
| Last updated | 2026-06-25 |
| Source | https://github.com/Vonng/ddia |
What ddia is
This repository contains a Hugo/Hextra-based static site translation covering data structures, replication, sharding, transactions, distributed consensus, batch and stream processing. The project is not a software library or framework—it is educational content with ongoing community contributions focused on translation accuracy and completeness.
Get the ddia source
Clone the repository and explore it locally.
git clone https://github.com/Vonng/ddia.gitcd ddia# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- This is a translation project, not software—implementation means accessing and reading the content at ddia.vonng.com or building the Hugo site locally using the provided theme (Hextra).
- Translation completeness varies by chapter; second edition has 10 of ~14 chapters done. Verify chapter availability before assigning it as team reading material.
- Content reflects the 2nd edition of the original work; ensure your use case aligns with the book's publication date and scope (does not cover very recent distributed systems developments post-publication).
- Site infrastructure (hosting, CDN, uptime) is managed by the translator (Vonng); no SLA or commercial support agreement exists.
- Community contributions are welcome but moderated. Translation terminology decisions and merge timelines are at translator discretion; plan accordingly if proposing changes.
When to avoid it — and what to weigh
- Seeking a software library or runnable codebase — DDIA is educational documentation, not a deployable tool, framework, or service. It contains no APIs, SDKs, or executable components.
- Requiring complete, stable second-edition coverage — Translation is in progress (10 of 14+ chapters complete). Readers expecting a finished product should wait or refer to the original English edition or official published Chinese translation.
- Needing production system guidance specific to your stack — DDIA provides foundational theory and historical context; it does not substitute for vendor documentation, operational runbooks, or technology-specific performance tuning guides.
- Commercial republication or derivative works — License is CC-BY-4.0, which permits sharing and adaptation with attribution, but translator explicitly notes the translation is for learning purposes only and requests that readers with English ability purchase the official version to support the author.
License & commercial use
CC-BY-4.0 (Creative Commons Attribution 4.0 International). Permits copying, distribution, and adaptation for any purpose (commercial or non-commercial) provided proper attribution is given to the original author (Martin Kleppmann) and translator (Vonng). Share-alike clause does not apply; derivatives need not use the same license.
CC-BY-4.0 technically permits commercial use (e.g., including chapters in a paid course, corporate training materials, or a subscription service) provided attribution is maintained. However, the translator's README explicitly states the translation was created for personal learning and research, requests purchasing the official English version to support the author, and notes that a formal Chinese translation exists through official channels (JD.com). Requires review if your use involves resale, commercialization, or competition with official channels. Recommendation: contact translator or purchase official translation to avoid friction.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Strong |
| License clarity | Clear |
| Deployment complexity | Low |
| DEV.co fit | Possible |
| Assessment confidence | High |
Not applicable as a security concern—this is static content with no authentication, user data, or backend systems. Hosted on GitHub and ddia.vonng.com. Standard web security practices (HTTPS on official site) should be verified by visitors. No PII, credentials, or sensitive operations are involved. Content integrity depends on GitHub and translator's account security; no cryptographic verification provided.
Alternatives to consider
Official English 'Designing Data-Intensive Applications' (2nd ed.) by Martin Kleppmann, O'Reilly
Authoritative source; complete and current. Requires purchase or O'Reilly subscription. No translation overhead. Best for English-fluent teams.
Official Chinese translation (published 2024, available via JD.com and other retailers)
Professionally translated and published by official channels. Supports the author and translator financially. Likely more polished terminology and proofreading. Recommended for commercial use or organizations that prefer formal versions.
Free online courses (e.g., MIT 6.824 Distributed Systems, CMU's database courses) + supplementary blog posts
Covers similar ground with hands-on labs and interactive instruction. More recent content. Requires time investment in multiple sources. Best if seeking deeper practical experience, not a consolidated reference.
Build on ddia with DEV.co software developers
Read the free online translation at ddia.vonng.com or contribute to the ongoing second-edition translation on GitHub. For commercial use or a polished published version, purchase the official Chinese edition.
Talk to DEV.coRelated on DEV.co
Explore the category and the services that help you build with it.
ddia FAQ
Can I use DDIA content in a paid training course or internal wiki?
Is the second edition complete?
How do I build and host this locally?
What if I find a translation error or want to contribute?
Software development & web development with DEV.co
DEV.co helps companies turn open-source tools like ddia into production software. Our software development services cover the full lifecycle — architecture, web development, integration, and maintenance — delivered by software developers and web developers who ship. Engage our software development agency to implement or customize it for your open-source databases stack.
Use DDIA as your distributed systems reference.
Read the free online translation at ddia.vonng.com or contribute to the ongoing second-edition translation on GitHub. For commercial use or a polished published version, purchase the official Chinese edition.