I'm not an expert on this so I would double check, however I think this is all 
the case,

If you only have one dyno then the app will shutdown when there are no requests 
for a certain time period. I believe this isn't the case once you have more 
than one dyno but in my experience at that point you have enough concurrent 
connections to keep things alive anyway.

If you are caching the page it will be stored in varnish so the request will 
never be handed out to the app and will therefore allow the app to shutdown.

Steve


On 7 Jan 2011, at 09:02, Martin Petrov wrote:

> Hi,
> 
> Looking at my logs I see that if my application is not used for 1 hour
> its state is changed from up to down. Next time a request comes it
> takes several seconds to start again.
> 
> Does requesting an http cached page keeps the application alive? My
> app has only one page, which is http cached.
> 
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