How can data persistence be achieved in Couchbase?

Data persistence in Couchbase can be achieved through several different methods.

1. Utilize persistent storage engines: Couchbase supports the use of various persistent storage engines to ensure data persistence, including the built-in Magma storage engine, the ForestDB storage engine, and optional third-party storage engines such as RocksDB.
2. Configure the persistence settings for the bucket: When creating a bucket, you can configure its persistence settings, including setting the persistence method and strategy. You can choose to synchronize data to disk or write it asynchronously to disk, and can set the persistence frequency and data replication quantity according to your needs.
3. Utilize XDCR for data replication: Couchbase offers cross-cluster data replication functionality, allowing for data synchronization and backup between different clusters to ensure data persistence and high availability.
4. Backup and restore data: Regularly backing up data using the tools provided by Couchbase ensures the persistence and security of data, allowing for data recovery when needed.

Overall, efficiently configuring persistent settings, utilizing XDCR for data replication, and regularly backing up data can effectively achieve data persistence in Couchbase.