选择调度程序链接。
要获得更多资料，请参阅参考资料中“调度器”部分的链接。
For more information, see the links under "Schedulers" in the Resources section.
实际上，延迟是对象被调度回调的泛化，但它们也允许使用诸如链接依赖回调和在这些链接中进行错误条件处理之类的技术。
In essence, deferreds are a generalization of scheduled callbacks, but allow techniques such as chaining dependent callbacks and handling error conditions in these chains.
如前所述，PortalSearch包括用来启动爬网程序和索引维护处理的调度程序，其中索引维护处理可以删除过时的文档和断开的链接。
As described above, Portal Search includes a scheduler to start the crawlers and the index maintenance process that removes outdated documents and broken links.
另外还包括了传输调度和单一命令中链接轮询序列的能力。
The ability to schedule transmissions and chain a sequence of polls in a single command is included.
另外还包括了传输调度和单一命令中链接轮询序列的能力。
The ability to schedule transmissions and chain a sequence of polls in a single command is included.
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