2021-09-20 17:14:55 +02:00
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Data in MapComplete can come from multiple sources.
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2021-09-21 02:10:42 +02:00
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Currently, they are:
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- The Overpass-API
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- The OSM-API
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- One or more GeoJSON files. This can be a single file or a set of tiled geojson files
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- LocalStorage, containing features from a previous visit
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- Changes made by the user introducing new features
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When the data enters from Overpass or from the OSM-API, they are first distributed per layer:
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OVERPASS | ---PerLayerFeatureSource---> FeatureSourceForLayer[]
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2021-11-07 16:34:51 +01:00
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OSM |
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2021-09-21 02:10:42 +02:00
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The GeoJSon files (not tiled) are then added to this list
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A single FeatureSourcePerLayer is then further handled by splitting it into a tile hierarchy.
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In order to keep thins snappy, they are distributed over a tiled database per layer.
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## Notes
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`cached-featuresbookcases` is the old key used `cahced-features{themeid}` and should be cleaned up
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