I am using ExtJS 5.0.1. I have a grid which does not autoLoad. Once the store is manually loaded by using the click button in TopBar, the grid receives records.
Ext Js introduction and new features in Ext Js 6
Show more columns in task area - Bryntum Support Forums Apr 09, 2015
Ext.js is high-performance, customizable UI widgets - including HTML5 grids, trees, lists, forms, menus, toolbars, panels, windows, and so on. BufferedRenderer plugin - Ext.grid.plugin.BufferedRenderer - This plugin is used to render large number of grid records.