This pattern has many variants, one service called active: mapper USES a resource containing a routing map between address Spaces.

该模式有很多变量，一个叫做active： mapper的服务使用了一个包含地址空间之间的路由映射的资源。

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In that interaction, the catalog service returns information about the grid, including a complete routing map defining the location of all grid partitions and the associated key space for each.

在这种交互过程中，目录服务会返回关于网格的信息，包括完整的路由图(定义所有网格分区的位置)和各自的相关密钥空间。

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Therefore flow developers should not use routing decisions in which variable reference expressions map onto name columns whose values may be NULL.

因此，流开发人员不应该使用变量引用表达式映射到名称列可能为 NULL 的路由决策。

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"The core of all these apps--map display, waypoint search, tracking and routing--is the same, " notes TrailBehind Chief Executive Andrew Johnson.

FORBES