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cdnjs
Developer(s)Ryan Kirkman, Thomas Davis, Matt Cowley, Sven Sauleau, Tyler Caslin
Initial releaseFebruary 25, 2011; 13 years ago (2011-02-25)[1]
Repositorygithub.com/cdnjs/cdnjs
Written inJavaScript, Go
Operating systemCross-platform
TypeFOSS CDN
LicenseMIT License[2]
Websitecdnjs.com

cdnjs is a free and open-source software (FOSS) content delivery network (CDN) hosted by Cloudflare.[3][4] As of May 2021, it serves 4,013 JavaScript and CSS libraries, which are stored publicly on GitHub.[5][6][7] It is included in millions of websites, or 12.4% of the websites on the Internet, making it the second most popular CDN for JavaScript.[8][9][10]

History

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In January 2011, Ryan Kirkman and Thomas Davis created the service,[11] launching it on GitHub on February 25, 2011.[12][13][14] It initially served content through Amazon CloudFront.[12][15] On June 15, 2011,[16] cdnjs partnered with Cloudflare, who provided the CDN and subdomain cdnjs.cloudflare.com for the project.[12][13][14][17]

On November 1, 2019, the founders turned over control of cdnjs to Cloudflare, citing "technical and commercial reasons."[18] According to the community maintainers, the project was difficult to manage because of limited access to the GitHub repository, inactive founders, and a small budget.[18][19][20] It is estimated the annual budget at the time was approximately $50/yr.[18][21]

Operation

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The service is maintained by the community and Cloudflare.[4] As of May 2021, there have been 1,443 contributors to the main GitHub repository, and 88 contributors to the newer package configuration GitHub repository.[6][22]

It is also sponsored by DigitalOcean, Algolia, Heroku, Atlassian, Sentry, and Lean20.[23][24][25]

There is a public JSON API for developers to query cdnjs library metadata.[26][27]

Resources on cdnjs can be loaded using a number of connection protocols – HTTP/2, HTTP, HTTPS or SPDY.[5][25][28]

The cdnjs.cloudflare.com domain is part of the HSTS preload list.[29]

There exist websites that host clones of cdnjs libraries on their own servers:

References

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  1. ^ "cdnjs/cdnjs GitHub API". GitHub. Retrieved 8 July 2019.
  2. ^ "cdnjs/LICENSE at master · cdnjs/cdnjs". GitHub. Retrieved 17 April 2019.
  3. ^ "libraries - cdnjs.com - The best FOSS CDN for web related libraries to speed up your websites!". Retrieved 17 April 2019.
  4. ^ a b "Sponsorships". Cloudflare. Retrieved September 3, 2020.
  5. ^ a b "Top 4 CDN services for hosting open source libraries | opensource.com". opensource.com. Retrieved 18 April 2019.
  6. ^ a b "cdnjs/cdnjs: 🤖 CDN assets - The #1 free and open source CDN built to make life easier for developers". GitHub. Retrieved 13 May 2021.
  7. ^ Ivanovs, Alex (April 3, 2014). "Faster Content Delivery Solutions for Web Developers". The Huffington Post. Retrieved September 3, 2020.
  8. ^ "Usage Statistics and Market Share of JavaScript Content Delivery Networks for Websites". W3Techs. Retrieved 13 May 2021.
  9. ^ Goto, Daichi (November 1, 2018). "JavaScript CDNのCDNJSが成長中、シェア8%超え". Mynavi.
  10. ^ "ULTIMATE GUIDE TO CDNJS- WHAT IT DOES FOR YOUR WEBSITE". BelugaCDN. July 27, 2020. Retrieved September 3, 2020.
  11. ^ "cdnjs.com: the missing cdn". cdnjs.com. Archived from the original on January 25, 2011. Retrieved September 3, 2020.
  12. ^ a b c "CDNJS: Community Moderated Javascript Libraries + CloudFlare". Cloudflare. 16 June 2011. Retrieved 18 April 2019.
  13. ^ a b "345 - Behind CDNJS - #Cat5TV Category5TV". May 3, 2014. Retrieved September 3, 2020.
  14. ^ a b "63: CDNJS with Thomas Davis and Ryan Kirkman". The Changelog. June 21, 2011. Retrieved September 3, 2020.
  15. ^ "cdn js | Treehouse Blog". Retrieved 18 April 2019.
  16. ^ @Cloudflare (16 June 2011). "CDNJS: all the Internet's best Javascript libraries, now in a single, fast repo powered by CloudFlare! http://blog.cloudflare.com/cdnjs-community-moderated-javascript-librarie" (Tweet) – via Twitter.
  17. ^ Perez, Sarah (June 24, 2019). "Cloudflare issues affecting numerous sites on Monday AM [Update: fixed]". TechCrunch. Retrieved September 3, 2020.
  18. ^ a b c "Lack of cdnjs activity". Hacker News. November 1, 2019. Retrieved September 3, 2020.
  19. ^ "Lack of cdnjs activity". GitHub. October 21, 2019. Retrieved September 3, 2020.
  20. ^ "An Update on CDNJS". The Cloudflare Blog. December 19, 2019. Retrieved September 3, 2020.
  21. ^ "cdnjs". Open Collective. Archived from the original on December 24, 2019. Retrieved September 3, 2020.
  22. ^ "cdnjs/packages: 📦 Package configurations - The #1 free and open source CDN built to make life easier for developers". GitHub. Retrieved 13 May 2021.
  23. ^ "Open Source at DigitalOcean". Retrieved 8 July 2019.
  24. ^ "15+ Free CDN WordPress Services to Boost Your Site Speed (2019) - CollectiveRay". Retrieved 18 April 2019.
  25. ^ a b "About Us - cdnjs - The #1 free and open source CDN built to make life easier for developers". Retrieved 13 May 2021.
  26. ^ "cdnjs API | ProgrammableWeb". Retrieved 18 April 2019.
  27. ^ "API - cdnjs.com - The best FOSS CDN for web related libraries to speed up your websites!". Retrieved 17 April 2019.
  28. ^ "CDNJS: The Fastest Javascript Repo on the Web". Cloudflare. 12 December 2012. Retrieved 18 April 2019.
  29. ^ "HSTS Preload List Submission". Retrieved 17 April 2019.
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