On Mar 8, 12:50 pm, bratliff <[email protected]> wrote:
> On Mar 8, 5:50 am, Ben Appleton <[email protected]> wrote:
>
>
>
> > We now queue image requests in JS, only fetching at most 12 images at a
> > time.  This allows to cancel requests if a tile falls out of view before the
> > request has been forwarded to the browser, which reduces latency for a quick
> > sequence of zooms.  To recover from stalled tiles we abandon a tile fetch
> > after 2 minutes.
>
> > This can still fail in a few ways:
>
> >    - The bandwidth could be so low that loading 12 tiles x 25kB = 300kB
> >    takes more than 2 minutes.
> >    - The internet connection could drop out temporarily.
> >    - The page could be making many other HTTP requests, blocking our tile
> >    requests.
>
> > I appreciate your feedback; we haven't finished optimizing tile loading yet.
>
> >  The API does not reload a discarded tile if it returns

I am experiencing approximately 10% to 15% failure rate.  I wonder if
my ISP is throttling my requests.  Perhaps HTML & JS files receive
priority over JPEG & PNG files.  Perhaps too many requests to the same
domain are demoted to lower priority.  I agree dial-up is a relic of
the past.  I have learned to live with slowness but not
unreliability.  For now, I am forced to use V2.

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