Centralize the user store, to allow you to manage the user accounts from one single store and eliminate the need to map or synchronize user accounts from different user stores.

• 实现用户存储器的集中化,以便能够从一个单独的存储器管理用户帐户并不再需要映射,或者实现不同用户存储器用户帐户的同步化。