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System for persistent caching of LDAP metadata in a cluster LDAP server topology

机译:用于在集群LDAP服务器拓扑中持久缓存LDAP元数据的系统

摘要

Systems and methods for providing consistent metadata in a cluster database system are disclosed. Each node contains a number of LDAP server instances, as well as a monitor process. Each node contains a node shared memory, and the cluster contains a cluster shared memory stored on a directory store. When a client alters metadata in one of the LDAP server instances, the LDAP server instances writes the changes to the directory store, and provides update information, such as a version number, to the node shared memory. Other server instances on that node poll the node shared memory to determine whether updates have been made. If updates have been made, the other server instances update their on-heap caches based on the directory store. Each monitor process determines whether changes have been made to the cluster shared memory, and if so, updates the node shared memory based on the directory store.
机译:公开了用于在集群数据库系统中提供一致的元数据的系统和方法。每个节点包含多个LDAP服务器实例以及一个监视进程。每个节点都包含一个节点共享内存,而群集包含一个存储在目录存储中的群集共享内存。当客户端更改LDAP服务器实例之一中的元数据时,LDAP服务器实例会将更改写入目录存储,并向节点共享内存提供更新信息(例如版本号)。该节点上的其他服务器实例将轮询节点共享内存,以确定是否已进行更新。如果进行了更新,则其他服务器实例将根据目录存储更新其堆上缓存。每个监视进程都会确定是否已对群集共享内存进行了更改,如果已更改,则将基于目录存储更新节点共享内存。

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