ZODB replicated storage (ZRS) provides database replication for ZODB. For each database, a primary storage and one or more secondary storages may be defined. The secondary storages will automatically replicate data from the primary storage.
Replication is superior to back-ups because as long as secondaries are running, secondary data is kept updated. In the event of a failure of a primary storage, just reconfigure a secondary to be the primary, and it can begin handling application requests.
Features
Primary/secondary replication
Support for read-only secondary storages
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