Good to know you're ok with a datastore latency spike at 2am that causes a
lot of new instances to be spun up eating up your daily quota and you being
down the rest of the day.

On Fri, Sep 2, 2011 at 11:26 AM, Philip <[email protected]> wrote:

> I just asked: We still have a maximum budget. No need to worry about
> that.
>
> On Sep 2, 8:23 pm, Stephen Johnson <[email protected]> wrote:
> > There still needs to be a maximum. A daily rate can still be exhausted by
> a
> > denial of service. Worse yet when AppEngine has issues such as datastore
> > issues, memcache issues, task queue issues and all the other issues it
> has,
> > it can cause your latency to rapidly increase even though your requests
> are
> > failing. The scheduler will then start spinning up instances to serve bad
> > requests and eat your daily quota for now good reason. In my opinion
> there
> > needs to be a Max. Active Instances and also we should be able to set
> > Minimum Idle Instances to zero. Not sure why it can only be set to 1.
> >
> >
> >
> >
> >
> >
> >
> > On Fri, Sep 2, 2011 at 11:07 AM, Philip <[email protected]>
> wrote:
> > > I would think that we can still specify an upper limit for instance
> > > hours but some clarification would be nice.
> >
> > > On Sep 2, 7:59 pm, Stephen Johnson <[email protected]> wrote:
> > > > I mean a Maximum Active Setting (not the idle setting which is
> useless
> > > > against a denial of service attack).
> >
> > > > On Fri, Sep 2, 2011 at 10:59 AM, Stephen Johnson <
> [email protected]
> > > >wrote:
> >
> > > > > That's only for idle instances but if they are actively serving
> request
> > > due
> > > > > to a denial of service which is Brandon is talking about then you
> will
> > > be
> > > > > charged. There definitely needs to be a maximum setting.
> >
> > > > > On Fri, Sep 2, 2011 at 10:54 AM, prgmratlarge <
> [email protected]
> > > >wrote:
> >
> > > > >> Quoting from
> > > > >>
> http://code.google.com/appengine/kb/postpreviewpricing.html#scheduler.
> > > ..
> >
> > > > >> Max Idle Instances: Decreasing this value will likely decrease
> your
> > > > >> bill as fewer idle instances will typically be running and we will
> not
> > > > >> charge for any excessive idle instances. In this case the
> scheduler
> > > > >> knob is a suggestion to the scheduler but we will not charge you
> for
> > > > >> excess if the scheduler ignores the suggestion. For instance, if
> you
> > > > >> set Max Idle Instances to 5 and the scheduler leaves 16 instances
> up
> > > > >> for some length of time, you will only be charged for 5 instances.
> >
> > > > >> In other words, even though there may be more than your max, you
> will
> > > > >> only be charged for your max.
> >
> > > > >> On Sep 2, 1:02 pm, Seb <[email protected]> wrote:
> > > > >> >   Hi,
> >
> > > > >> > I've set "Max Idle Instances: ( 1 ) "
> > > > >> > and "Min Pending Latency: ( 15.0s ) "
> > > > >> > but, after waiting 15 minutes, there are still 2 instances
> > > presents...
> >
> > > > >> > The latency of the requests are less than 1 seconds...
> >
> > > > >> > How can I get only 1 instance???
> >
> > > > >> > Thanks,
> > > > >> > Seb.
> >
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