A detailed look at the backup and redundancy infrastructure behind sr.ht, a software forge. Covers ZFS RAID and snapshots on the primary PostgreSQL server, PostgreSQL continuous archiving and streaming replication to an off-site standby in San Francisco, and Borg backups for filesystem data like git repositories. Also discusses monitoring via cron and zfs-zed alerts, and the importance of periodically testing backups by provisioning private replicas from them.
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