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Re: rollout changes to reduce downtime - linked to 'release features when they are ready'

 

On Fri, Jul 23, 2010 at 9:16 AM, Andrew Bennetts
<andrew.bennetts@xxxxxxxxxxxxx> wrote:
> Robert Collins wrote:
>> On Thu, Jul 22, 2010 at 6:59 PM, Jeroen Vermeulen <jtv@xxxxxxxxxxxxx> wrote:
>> > On 2010-07-22 18:47, Robert Collins wrote:
>> >
>> >> Librarian is covered already, we have 2 or so I'm told, and they
>> >> should be staggered. (If they aren't, we'll have to stagger them :))
>> >>
>> >> So we should be ok.
>> >
>> > As long as failover is built into the Librarian client, that is.  Is it?
>>
>> the staggered rollout would be gracefully done - and it hits a squid
>> cache anyway, which does the load balancing. So I think we're fine. If
>> we're not, it will be shallow.
>
> The squid cache isn't relevant to librarian *uploads* though, surely?
>
> So the upload client does need to be taught to failover gracefully (if
> it hasn't already).

No, because staggered rollouts don't interrupt connections.

-Rob



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