Presto is basically a set of WAR files that run on Tomcat container with a high availability (HA) database ( MySQL) with failover.

Presto基本上是由一套运行在 Tomcat容器上的WAR文件构成的，它使用了一个高可用的数据库（ MySQL）处理失败。

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When you require a more robust high availability environment, you should configure a secondary idle container on each Application Server instance for the rollover to fail to.

当您需要一个更加健壮的高可用性环境时，您应该在每个Application Server实例中配置一个辅助的闲置容器来过渡故障。

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To ensure fault tolerance and high availability, WebSphere eXtreme Scale shard distribution algorithms ensure that the primary and replica shards are never in the same container.

为了确保容错和高可用性，WebSphere eXtreme Scale碎片分布算法确保主碎片和复制碎片绝不会位于同一个容器中。

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