Dogfooding at scale: migrating cdnjs to Cloudflare's Developer Platform
Blog post from Cloudflare
As of June 23, 2026, cdnjs, a prominent open-source content delivery network for JavaScript and CSS libraries, is now exclusively operating on Cloudflare's Developer Platform, after identifying platform limitations and driving its growth. Initially built in 2011 as a community-driven mirror for open-source libraries, cdnjs is now utilized by approximately 12% of all websites, handling 9 billion requests daily with a 98.6% cache hit rate across over 330 Cloudflare data centers. Despite advancements in web development tools, cdnjs remains vital due to its consistent URL pattern and immutable versions, which are widely embedded in educational resources and favored by AI models for scaffolding HTML demos. The recent migration from a complex, multi-component architecture involving Google Cloud Platform and Cloudflare Workers to a streamlined system running entirely on Cloudflare's platform addressed previous challenges with observability, storage, and pipeline resilience. This transition allows cdnjs to support future possibilities, such as serving modern ES modules, while maintaining its free and open-source nature, with input encouraged from the community for continuous improvement.
| Trend | Post Mentions | Total Month Mentions | Posts | Companies | MoM |
|---|---|---|---|---|---|
| Observability | 2 | 3,826 | 727 | 190 | -10% |
| LLM | 1 | 7,115 | 1,261 | 236 | +13% |
| Real-time | 1 | 5,674 | 1,350 | 233 | -6% |
| Serverless | 1 | 747 | 240 | 95 | -27% |
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