chore: add locust files + testing setup

polylan_submitter/place/canvas.py

@@ -22,7 +22,7 @@ _client = redis.Redis.from_url(settings.PLACE_REDIS_URL)
 
 
 def _canvas_key(event_path: str) -> str:
-    return f"place:canvas:{event_path}"
+    return f"place:{event_path}:canvas"
 
 
 def read_canvas(event_path: str, width: int, height: int) -> bytes:
@@ -49,9 +49,11 @@ def rebuild_canvas_from_history(event, width: int, height: int) -> int:
     """
     grid = bytearray(width * height)
     count = 0
-    placements = PixelPlacement.objects.filter(event=event).order_by(
-        "placed_at"
-    ).values_list("x", "y", "color_index")
+    placements = (
+        PixelPlacement.objects.filter(event=event)
+        .order_by("placed_at")
+        .values_list("x", "y", "color_index")
+    )
     for x, y, color_index in placements.iterator():
         if x >= width or y >= height:
             continue