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restic is the encrypted, deduplicated, incremental backup tool I run in production on several servers. A practical guide to installing it on Debian, setting up an S3-compatible repository, automating daily backups with systemd, and verifying that restore actually works before you need it.
JuiceFS is a distributed, POSIX-compliant file system that separates data, stored in an S3-compatible object store, from metadata, stored in a database such as PostgreSQL or Redis. This guide installs JuiceFS on a three-node Linux cluster to share files without relying on NFS.
Litestream is an open-source tool that replicates a SQLite database to an S3 bucket in near real time by reading the WAL SQLite already writes. It offers point-in-time recovery, overhead of only 1 to 3% CPU, and replaces the need for a separate database server in small apps.
