EhCache 是一个纯 Java 的进程内缓存框架，具有快速、精干等特点，是 Hibernate 中默认的 CacheProvider。本文充分的介绍了 EhCache 缓存系统对集群环境的支持以及使用方法。
EhCache 是一个纯 Java 的进程内缓存框架，具有快速、精干等特点，是 Hibernate 中默认的 CacheProvider。
下图是 EhCache 在应用程序中的位置：
EhCache 的主要特性有：
问题可能有多种表现类型：
处理方法: 继续阅读
Fig 1. Typical management configuration
MySQL Cluster is designed to be a High Availability, Fault Tolerant database where no single failure results in any loss of service.
This is however dependent on how the user chooses to architect the configuration – in terms of which nodes are placed on which physical hosts, and which physical resources each physical host is dependent on (for example if the two blades containing the data nodes making up a particular node group are cooled by the same fan then the failure of that fan could result in the loss of the whole database).
Of course, there’s always the possibility of an entire data center being lost due to earthquake, sabotage etc. and so for a fully available system, you should consider using asynchronous replication to a geographically remote Cluster.
Fig 1. illustrates a typical small configuration with one or more data nodes from different node groups being stored on two different physical hosts and a management node on an independent machines (probably co-located with other applications as its resource requirements are minimal. If any single node (process) or physical host is lost then service can continue.