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On 12 Oct 2006, at 10:05, Lennart Regebro wrote:
But honestly, compare the likelyhood that all three of these would
fail at one time, together with the increasing likelyhood than one
server of them is misconfigured and starts disturbing the usage for a
minor part of the users, then we will quickly realize that the more
backups and failsafes we have the larger the likelyhood that something
of this will go wrong.

8 servers seems to be to be a complete overkill, and it will only
cause problems. I will change my mind on this the time all zone-edit
servers stop working at the same time as two of the backups fail.

Don't overcomplicate things. It just makes them fail.

Exactly.

We are not building a carrier-grade solution here because, as the programmer idiom goes, it is YAGNI (you ain't gonna need it).

Keeping a carrier-grade solution running correctly is always more effort than keeping the simple solution up. There's a diminishing return between upkeep/effort/maintenance/script-writing and "oops, DNS is gone for an hour". I seriously don't see the added value.

jens


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