A walkthrough of the backup and recovery architecture behind pg_hardstorage, a PostgreSQL backup tool. Covers how base backups and WAL are captured, how data enters the repository, and how chunks, manifests, and metadata are organized. Also explores engineering decisions such as content-addressed storage, chunking, deduplication, manifest design, integrity verification, crash safety, garbage collection, and the restore workflow. The full Storage and Recovery Guide is available on the CYBERTEC product page, and source code is on GitHub.
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