Merge pull request #12671 from tschaub/cacheless

Configure cache on the layer instead of the source

src/ol/source/DataTile.js

@@ -23,7 +23,6 @@ import {getUid} from '../util.js';
  * @property {import("../tilegrid/TileGrid.js").default} [tileGrid] Tile grid.
  * @property {boolean} [opaque=false] Whether the layer is opaque.
  * @property {import("./State.js").default} [state] The source state.
- * @property {number} [cacheSize] Number of tiles to retain in the cache.
  * @property {number} [tilePixelRatio] Tile pixel ratio.
  * @property {boolean} [wrapX=true] Render tiles beyond the antimeridian.
  * @property {number} [transition] Transition time when fading in new tiles (in miliseconds).
@@ -56,7 +55,7 @@ class DataTileSource extends TileSource {
     }
 
     super({
-      cacheSize: options.cacheSize,
+      cacheSize: 0.1, // don't cache on the source
       projection: projection,
       tileGrid: tileGrid,
       opaque: options.opaque,