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From Peter Lin <wool...@gmail.com>
Subject Re: 99.999% uptime - Operations Best Practices?
Date Wed, 22 Jun 2011 23:11:15 GMT
you have to use multiple data centers to really deliver 4 or 5 9's of service


On Wed, Jun 22, 2011 at 7:09 PM, Edward Capriolo <edlinuxguru@gmail.com> wrote:
> Committing to that many 9s is going to be impossible since as far as I
> know no internet service provier will sla you more the 2 9s . You can
> not have more uptime then your isp.
>
> On Wednesday, June 22, 2011, Chris Burroughs <chris.burroughs@gmail.com> wrote:
>> On 06/22/2011 05:33 PM, Les Hazlewood wrote:
>>> Just to be clear:
>>>
>>> I understand that resources like [1] and [2] exist, and I've read them.  I'm
>>> just wondering if there are any 'gotchas' that might be missing from that
>>> documentation that should be considered and if there are any recommendations
>>> in addition to these documents.
>>>
>>> Thanks,
>>>
>>> Les
>>>
>>> [1] http://www.datastax.com/docs/0.8/operations/index
>>> [2] http://wiki.apache.org/cassandra/Operations
>>>
>>
>> Well if they new some secret gotcha the dutiful cassandra operators of
>> the world would update the wiki.
>>
>> The closest thing to a 'gotcha' is that neither Cassandra nor any other
>> technology is going to get you those nines.  Humans will need to commit
>> to reading the mailing lists, following JIRA, and understanding what the
>> code is doing.  And humans will need to commit to combine that
>> understanding with monitoring and alerting to figure out all of the "it
>> depends" for your particular case.
>>
>

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