FastDOL vs FEC
Same instrument, two spec sheets — measured, not claimed.
FastDOL vs FEC: common questions
Which is more reliable, FastDOL or FEC?
On our scheduled checks, FEC leads on measured uptime — FastDOL at 76.1% versus FEC at 99.44% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, FastDOL or FEC?
FastDOL has the lower median latency in our checks — FastDOL responds in 443 ms versus FEC at 960 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do FastDOL and FEC need an API key?
Both ask you to authenticate — FastDOL uses an API key and FEC uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call FastDOL and FEC from the browser?
Only FEC is browser-friendly — it returns CORS headers over HTTPS. FastDOL needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are FastDOL and FEC free for commercial use?
FastDOL has unclear commercial terms, and FEC 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.