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The customer is considering to deploy multi-active system cross multiple sites, the distance among sites might be more than 1000km. The data could be distributed by hash, and rarely cross site data access by transaction/query. DPF might be a good choice, but currently there are some major weak points as below: 1. Single point failure of catalog node. 2. Only one data copy for every partition, no data redundancy. 3. No automatic application routing support, i.e. the application could get the connection to the partition where the app related data is on
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