diff --git a/tilecloud_chain/internal_mapcache.py b/tilecloud_chain/internal_mapcache.py
index 9351d94b8..765415dd1 100644
--- a/tilecloud_chain/internal_mapcache.py
+++ b/tilecloud_chain/internal_mapcache.py
@@ -113,10 +113,15 @@ def delete_one(self, tile: Tile) -> Tile:
         return tile
 
     def _get_key(self, tile: Tile) -> str:
-        return (
-            f"{self._prefix}_{tile.metadata['config_file']}_{tile.metadata['layer']}_"
-            f"{tile.tilecoord.z}_{tile.tilecoord.x}_{tile.tilecoord.y}"
-        )
+        keys = [
+            self._prefix,
+            tile.metadata["config_file"],
+            tile.metadata["layer"],
+            tile.tilecoord.z,
+            tile.tilecoord.x,
+            tile.tilecoord.y,
+        ] + [value for key, value in tile.metadata.items() if key.startswith("dimension_")]
+        return "_".join([str(key) for key in keys])
 
     @contextlib.contextmanager
     def lock(self, tile: Tile) -> Iterator[None]:
diff --git a/tilecloud_chain/server.py b/tilecloud_chain/server.py
index 53e9f97ff..e69404c7c 100644
--- a/tilecloud_chain/server.py
+++ b/tilecloud_chain/server.py
@@ -248,7 +248,7 @@ def get_max_zoom_seed(config: tilecloud_chain.DatedConfig, layer_name: str) -> i
         if "min_resolution_seed" in layer:
             max_zoom_seed = -1
             for zoom, resolution in enumerate(config.config["grids"][layer["grid"]]["resolutions"]):
-                if resolution > layer["min_resolution_seed"]:
+                if resolution >= layer["min_resolution_seed"]:
                     max_zoom_seed = zoom
             return max_zoom_seed
         else: