In this episode, we worked on Postgres database backups and modified the backup tool, wal-e, to use the Shiv app format. wal-e is Postgres database backup tool that works by managing the Write-Ahead Log (WAL) that a Postgres database produces. The WAL is the log of recent changes that happened in the database. If you have access to a full WAL, then you can conceivably reproduce a Postgres database’s data.
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