One thing to note is that although the workaround of creating an unbuffered store works great when you can do it via code, there are some elements of grid editing where you don't get this opportunity - for example, using the cell or row editing plugins on a grid with a buffered store no longer works in 4.2.

Release Notes for Ext JS 4.2.3. Release Date: September 2, 2014 Version Number: 4.2.3.1477 New Features. Charts (3) EXTJS-11520 Pie charts should add a "hideLessThan" config to auto-hide labels for very small slices; EXTJS-11741 Pie charts should have configs to control rotation and clockwise orientation; EXTJS-12248 Chart axis should support an "titleAlign" property to control positioning of Ext JS's grid supports buffered rendering, which enables you to load large numbers of records into a grid without paging. Only the visible portions of the loaded store are rendered into the DOM. As the edge of the rendered data scrolls towards being in view, the table has new rows appended just in time, and rows removed from the receding side. Implements buffered rendering of a grid, allowing users to scroll through thousands of records without the performance penalties of rendering all the records into the DOM at once. The number of rows rendered outside the visible area can be controlled by configuring the plugin. Users should not instantiate this class. I'm looking to load a pretty big dataset (around 20k rows) and use the extjs 4.2 grid buffered rendering to view the data. I've seen so many examples that are different (extjs 4.2 examples) that my head is spinning and I can't get any of them to work.

ExtJS-Navigation-Demo/examples.json at master

Jul 22, 2017 · As per ExtJS 6.5.0 update and merge in Ext.NET, infinite scrolling grids like the overview example in Examples Explorer became extremely slow and unresponsive, as if the grid no longer is buffered at all. Setting BufferedRenderer="true" has no effect at all. According to ExtJS 6.5.0 documentation on Ext.panel.Table.bufferedRenderer, it is still

extjs-gpl/release-notes.html at master · tremez/extjs-gpl

Extjs Grid Get Selected Row Release Notes for Ext JS 5.0.0