On Jul 2, 2012, at 7:19 PM, Rodrick Brown <rodrick.br...@gmail.com> wrote:

> People are acting as if Netflix is part of some critical service they stream 
> movies for Christ sake.  Some acceptable level of loss is fine for 99.99% of 
> Netflix's user base just like cable, electricity and running water I suffer a 
> few hours of losses each year from those services it suck yes, is it the end 
> of the world no..

Actually calculating - understanding - cost of downtime, and what variations on 
that exist over time, are keys to reliability engineering.

But if you plan to cover X failure scenarios and only cover X/2 failure 
scenarios due to implementation glitches you goofed.

The right answer may be "relax and accept the downtime" and it may be "spend 
$10 million dollars to avoid most of these".  If you haven't thought it through 
and quantified, do so...



George William Herbert
Sent from my iPhone

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