Facebook post-mortems...

Tue Oct 5 17:42:03 UTC 2021

jcurran at istaff.org wrote:
> Fairly abstract - Facebook Engineering - 
> https://m.facebook.com/nt/screen/?params=%7B%22note_id%22%3A10158791436142200%7D&path=%2Fnotes%2Fnote%2F&_rdr 
> <https://m.facebook.com/nt/screen/?params={"note_id":10158791436142200}&path=/notes/note/&_rdr>
>
> Also, Cloudflare’s take on the outage - 
> https://blog.cloudflare.com/october-2021-facebook-outage/
>
> FYI,
> /John
>
This may be a dumb question, but does this suggest that Facebook 
publishes rather short TTLs for their DNS records?  Otherwise, why would 
an internal failure make them unreachable so quickly?

Miles Fidelman

-- 
In theory, there is no difference between theory and practice.
In practice, there is.  .... Yogi Berra

Theory is when you know everything but nothing works.
Practice is when everything works but no one knows why.
In our lab, theory and practice are combined:
nothing works and no one knows why.  ... unknown

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