Polyfill-service: polyfill.io is down for me

[aaronjensen]

I apologize, but I wasn't able to find a status page so I'm leaving this here for others. It appears that polyfill.io is down for me right now, serving 503s:

Is there a status page somewhere and/or is there a backup server we could be using?

Thanks!

[DannyFeliz]

Same here, it started to happen today.

[iDiver76]

Same here, happend right now

[luglio7]

Same here, only the "basic url works" https://cdn.polyfill.io/v2/polyfill.min.js

[oliviertassinari]

Here is a reproduction url: https://cdn.polyfill.io/v2/polyfill.min.js?features=Intl.~locale.en-US&flags=always.

[Tecktron]

Consistently an issue for me as well: https://cdn.polyfill.io/v2/polyfill.js?features=default-3.6,Intl.~locale.en

Error 503 Backend is unhealthy
Backend is unhealthy

Guru Mediation:
Details: cache-jfk8137-JFK 1540310102 3793895496

Varnish cache server

[JakeChampion]

Hi all, I'm looking into this issue. We have made no changes to the production service so I am currently not sure what is causing the issue.

[JakeChampion]

Update, we had a high amount of traffic bypass our CDN layer and overload our servers. I have scaled our servers to meet the large amount of traffic, the amount of errors has reduced completely to 0.

[DannyFeliz]

The service is up again, we're saved

[JakeChampion]

I have now added autoscaling to our backend servers to help avoid this situation happening again in the future. 👍

[aaronjensen]

Thanks @JakeChampion. FWIW, we have been seeing intermittent issues for about 15 days. We know this because we started seeing errors from IE11 that should not be there if it was properly polyfilled from a handful of users.

[aaronjensen]

@JakeChampion we're still seeing occasional errors. They're being reported from user's browsers so I don't actually know how or if the polyfill service is failing to serve a file, but it still is. Is it possible that there are still 503s being served?