Vizzuality/cartodb — Issue #447: don't load tiles at zoom level 2 on each map tab click
Author: tokumine
Created: 2012-01-22 13:17:01+00:00
State: open
Labels: bug, map

When you click the map tab, the map UI requests all the tiles at zoom level 2 before zooming in to your data and re-rendering.

This is ok for small datasets, but once you get > 100k vertices, you really start to notice it. In fact, it can totally cripple a cartodb.

Here's my local experience with 1.5million points: http://pastie.org/3230641

You can see the initial requests (at zoom level 2) take 80seconds. From here, the UI requests the real extent (zoom level 10), and renders in aound 8secs per tile. Both are slow, but the zoom level 2 render really kills it.