这一特性使您可以简化多个设备固件升级。
This feature lets you simplify firmware upgrades of multiple devices.
这就允许一个单元升级为新版本的一个节点，同时使对单元内运行的应用程序影响最小。
This allows the cell to be upgraded to the new release one node at a time, with minimal impact to the applications that are running within the cell.
Tomcat和Jetty使如今构建可伸缩的Comet应用程序成为可能，并且明确了未来面向Servlet 3.0标准化的升级路线。
Tomcat and Jetty make it possible to build scalable Comet applications today, with a clear upgrade path to standardization under Servlet 3.0 in the future.
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