[cheeaun]

Very curious to know more about this, regarding PMTiles:

> Unfortunately, making range requests in 80 GB files just doesn't work in production. It is fine for files smaller than 500 MB, but it has terrible latency and caching issues for full planet datasets.

Wondering which part incurs the latency here.

[hyperknot]

I explained a bit about PMTiles in this comment: https://news.ycombinator.com/item?id=41636376

In summary, on a cold start (so now when it's on HN it might be totally meaningless), the following page loads in like 8-10 sec for me: https://pmtiles.io/?url=https%3A%2F%2Fdata.source.coop%2Fpro...

Technically why it's slow is entirely on CloudFlare, so I can only guess. But probably they are not mirroring files of this size across their datacenters / servers. I don't know how their public buckets hosting is done, but it's definitely very slow.

OpenFreeMap on the other hand seems almost instant for me.

[bdon]

See my response here: https://news.ycombinator.com/item?id=41638031