[OSM-dev] all things to all people
steve at asklater.com
Tue Apr 22 15:55:26 BST 2008
On 22 Apr 2008, at 15:48, Richard Fairhurst wrote:
> SteveC wrote:
>> Thats not the point, its not about x number of CPU seconds per
>> - its that the statistics are fundamentally different for, say,
>> running a WMS and running a tile server. One scales, one doesn't.
> But IMHO the export tab isn't really like running a WMS. A WMS is
> basically an API
Again not the point - I'm using it as shorthand for 'static maps'
which is what we all used back before tiled maps existed. Remember
them? Slow? Poor quality? That's because even Microsoft with MapPoint
and TerraServer couldn't scale it well (you can relive those happy
times on expedia.co.uk and try mapping some hotels out).
This stuff is all fine now, my point is that if you have a reasonable
number of users and then double the number of tile users you can
probably do it on the same hardware with negligible QoS drop. If you
double the number of WMS / static maps / export tab users you will
halve or more the QoS. Thats what scaling is about.
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