alt Hacker NewsWhy should they when openfreemap is behind a CDN and their home page says things like:
> Using our public instance is completely free: there are no limits on the number of map views or requests. There’s no registration, no user database, no API keys, and no cookies. We aim to cover the running costs of our public instance through donations.
> Is commercial usage allowed?
> Yes.
IMHO, reading this and then just using it, makes a lot of sense. Yeah, you could put a cache infront of their CDN, but why, when they said it's all good, no limits, for free?
I might wonder a bit, if I knew the bandwidth it was using, but I might be busy with other stuff if my site went unexpectedly viral.
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I think, when you read that, you should be reassured that nobody is going to suddenly tell you to pay, and then still implement caching on your own side to preserve the free offering for everyone else.
Seriously, whose first thought on reading that is “oh great, I can exploit this”.
Politeness? Also speed.
But it depends on the project architecture. If the tiles are needed only client-side, then there's really little reason to cache things on _my_ server. That would imply I'm better at caching openstreetmap tiles than... openstreetmap. Plus you're just making the system needlessly more complicated.
And there's little reason for openstreet map to be upset, since it's not like _I_ am making 2 million requests - there are 2 million separate users of osm+. It's aligned to their incentive of having more people use osm and derived works. All is well.