climbingTiles: custom geojson tiles from DB 🎉

[zbycz]

// .env:
NEXT_PUBLIC_ENABLE_CLIMBING_TILES=true

// for local development of tiling
NEXT_PUBLIC_CLIMBING_TILES_LOCAL=true
XATA_PASSWORD=...

In exploration 3 we learned, that for our usecase (point)s gzipped GeoJSON is more effective than MVT tiles. Also with MVT we would have to generate tiles for every zoom level, because it encodes coordinates precision by the zoom level by-design. (MVT stores coordinates in meters relative the current tile bounds, trimmed by zoom level)

This exploration implements custom tile fetching of GeoJSON tiles. With maximum tile of zoom 12. We know that there is some treshold below which the size of tile is small enough.

All explorations here:

• climbingTiles: exploration #1 - xata REST api #747
• climbingTiles: exploration #2 – xata REST - db with pg #748
• climbingTiles: exploration #3 – proper pg client + MVT z10 encoding #811

29.1.2025:
Fetching data from Overpass...
Overpass elements: 172826
Records: 23396
SQL Query length: 8243397 chars
Done.
Duration: 71964 ms

https://app.xata.io/workspaces/osmapp-tvgiad/dbs/osmapp_db:us-east-1/branches/main/tables/climbing_features

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Name	Status	Preview	Updated (UTC)
osmapp	✅ Ready (Inspect)	Visit Preview	Feb 3, 2025 2:14pm