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|Oracle Fusion Middleware Deployment Planning Guide for Oracle Unified Directory 11g Release 1 (11.1.1)|
In a deployment of Oracle Unified Directory proxy using distribution deployment with load balancing, the data is split into partitions, and the data is replicated on the remote LDAP servers. Requests sent to the Oracle Unified Directory proxy are first distributed to the partition in which the data is stored, then the request is routed to one of the remote LDAP servers, depending on the load balancing algorithm set. The remote LDAP servers holding the partitioned data are replicated.
As illustrated in Figure 7-4, when the Oracle Unified Directory proxy receives a requests, it is filtered by the distribution to the correct partition. For example, a request for data Garry would be forwarded to partition 1, to the servers with data from A..L. The load balancer then forwards the request to one of the replicated remote LDAP servers.
Figure 7-4 Distribution with Load Balancing
The requests are routed to the remote LDAP servers within the data centers based on the load balancing algorithm set. For more information on the different load balancing algorithms, see Load Balancing Using the Proxy.
The advantages of this deployment are the speed of the updates, because of the distribution of data, and high availability of the data.
For more information on the different distribution algorithms, see Data Distribution Using the Proxy.
For more information on the different load balancing algorithms, see Load Balancing Using the Proxy.
For details on deploying this configuration, see Configuring Distribution and Load Balancing.