智能客户端是否合适？ [英] Is smartclient suitable?

问题描述

在ExtJS不合适之前，我收到了警告。

解决方案

SmartClient有一个单一的网格组件，既可以进行水平和垂直增量渲染，也可以处理非常大的两个行（几百万）和列（数百），性能下降。

SmartClient支持的所有网格功能 - 内联编辑，分组，过滤，动态冻结列，排序，重新排序字段，拖放（太长的列表）都受到这个单一的高数据量网格组件的支持。

一些用户已经运行使用Ext网格组件进行可伸缩性问题，并在SmartClient论坛上讨论：

http://forums.smartclient.com/showthread.php?t=2678

作为服务器的可扩展性，实际上，网格组件对服务器端的可扩展性贡献巨大。考虑SmartClient网格的自适应过滤机制：

http://www.smartclient.com/index.jsp#adaptiveFilter

此功能和相关的自适应排序功能削减了60-90％的最昂贵的服务器类型（即访问和过滤/排序大型数据集的那些）。

SmartClient普遍采用这种智能重新使用数据的方法，以避免昂贵的服务器端操作。 ResultSet类文档中提供了一个很好的概述;在SmartClient中，所有使用数据集的组件都可以将ResultSet用作缓存管理对象：

How does the waiting time for SmartClient scale across thousands of users editing grids?

I have received warnings before that ExtJS would not be suitable.

解决方案

SmartClient has a single grid component that does both horizontal and vertical incremental rendering, so it handles a very very large number of both rows (several million) and columns (several hundred) without degradation in performance.

All of the grid features supported by SmartClient - inline editing, grouping, filtering, dynamic frozen columns, sorting, reordering fields, drag and drop .. (too long to list) are supported by this single, high data volume grid component.

A number of users have run into scalability issues with the Ext grid component and discussed it here on the SmartClient forums:

http://forums.smartclient.com/showthread.php?t=2678

As far as scalability of the server, in reality the grid component contributes hugely to server-side scalability. Consider the adaptive filtering mechanism of the SmartClient grid:

http://www.smartclient.com/index.jsp#adaptiveFilter

This feature and the related "Adaptive Sort" feature cut down on 60-90% of the most expensive types of server hits (that is, those that access and filter/sort a large dataset).

SmartClient pervasively takes this approach of intelligently re-using data in order to avoid expensive server-side operations. A good overview is available in the ResultSet class documentation; the ResultSet is used as a cache management object by all components that work with datasets in SmartClient:

http://www.smartclient.com/docs/9.0/a/b/c/go.html#class..ResultSet

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