Adoptium vs CDNJS
Same instrument, two spec sheets — measured, not claimed.
Adoptium vs CDNJS: common questions
Which is more reliable, Adoptium or CDNJS?
On our scheduled checks, CDNJS leads on measured uptime — Adoptium at —% versus CDNJS at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Adoptium and CDNJS need an API key?
Neither needs a paid key — Adoptium is callable with no signup, and CDNJS is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Adoptium and CDNJS from the browser?
Yes — both Adoptium and CDNJS send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Adoptium and CDNJS free for commercial use?
Adoptium has unclear commercial terms, and CDNJS has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.