protomaps / PMTiles

Cloud-optimized + compressed single-file tile archives for vector and raster maps

https://protomaps.com/docs/pmtiles/

BSD 3-Clause "New" or "Revised" License

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Azure and Google Cloud CDN support #174

Open bdon opened 1 year ago

bdon commented 1 year ago

Determine the right set of services to use for each analogous to Cloudflare / AWS.

bdon commented 1 year ago

Findings

Azure

Azure Front Door seems to be the preferred CDN deployment, but has a $35 min monthly fee
Azure Functions supports NodeJS, meaning it should be able to share code with CF/AWS; getting it to communicate and authenticate with Storage Buckets is tricky

Google Cloud

Cloud CDN cannot communicate directly with Cloud Run or Cloud Functions without a Load Balancer?
Cloud CDN cannot do dynamic CORS?

More to come.

tengl commented 1 year ago

I uploaded the pmtiles file to the $web folder (static web site) in an Azure Blob Storage. Base on the logic for AWS and Cloudflare, I made a Function App that translates zxy urls to requests with a Range header using FetchSource. It is more generic than the other solutions since the pmtiles file can be published anywhere, but the entry point is of course specific to Azure Function Apps.

I don't know if accessing the pmtiles file directly using some other API would improve performance, but if you put it behind a CDN it will be fast as long as it hits the cache.

If you like I can make a PR with the code.

tengl commented 1 year ago

I created a pull request #197.

I found out that the pmtiles file doesn't have to be in the $web (static web site) folder, I only forgot to set access level on the container, that is why it didn't work for me.

bdon commented 1 year ago

Thanks, see comment https://github.com/protomaps/PMTiles/pull/197#issuecomment-1595486386 for next steps