This page introduces the high reliability of DDS.
Data Redundancy
DDS has a highly reliable architecture with multi-node replica sets and sharded clusters, and the data will be stored in multiple machines and racks.
Data Recovery
Currently, it supports one-click recovery of backup data to the current instance, that is, overwriting recovery. Overwriting recovery is to overwrite the specified backup data to the primary instance, and the data generated after the creation of the specified backup data will be lost, which poses certain risks. Users are advised to assess the impact before performing an overwriting recovery operation.
Data Backup
It supports physical hot backup, which is faster than mongo dump and has less impact on business. Auto backup and manual backup are supported.