How Snapshots and Logs are Used
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In-memory database updates you make using DDL and DML commands are written to logs on disk.
snapshot_, a snapshot is taken and written to disk.
snapshot_ is again reached.
Following a server restart, the latest snapshot and the logs containing the updates made after the snapshot are loaded from disk and replayed in memory.
With replication, database partitions are copied from a primary host to a secondary host.
When a replica is provisioned, it receives an initial snapshot from the master.
Going forward, the replica receives and replays logs from the master.
snapshot_ as set on the master, the replica takes a snapshot.
snapshot_ (as set on the master) is again reached.
Last modified: November 17, 2022