Using Probability Theory

“Weighted Video List Probability Selection”

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I am missing companies like Sun/IBM/ATT

“Brilliant but Complex”

technologies you should know about:

They are dying for “too good”

File Systems:

• BTRFS: ZFS alternative, easier learning curve, good snapshots
• XFS: Enterprise performance, simpler than ZFS
• F2FS: For SSD-optimized setups

Networking:

• BGP routing: If you ever need multi-homed connections
  

• WireGuard: Modern VPN, much simpler than OpenVPN/IPSec
  

• Cloudflare Tunnels: Bypass NAT/firewall issues easily
  

Database/Storage:

• PostgreSQL: Like the "ZFS of databases" - complex but bulletproof
  

• Redis: In-memory database, great for caching
  

• MinIO: S3-compatible object storage
  

Monitoring (Critical!):

• Prometheus + Grafana: Industry standard, worth learning
  

• Netdata: Real-time monitoring, very easy setup
  

Security:

• fail2ban: Auto-ban brute force attacks
  

• Let's Encrypt: Free SSL certificates
  

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using zfs send/receive, by leveraging snapshot pruning

transfer only some directories of a zpool/dataset

1. Create initial snapshot

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zfs snapshot pool/dataset@001

2. Remove unwanted directories (not to be transferred)

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rm -rf /pool/dataset/unwanted_dir1 /pool/dataset/unwanted_dir2

3. Create second snapshot (only includes wanted directories)

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zfs snapshot pool/dataset@002

4. Send only the second snapshot, with compression (-c for compressed stream)

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zfs send -c pool/dataset@002 | zfs receive -F pool2/dataset

5. Destroy snapshot @002 (cleanup)

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zfs destroy pool/dataset@002

6. Rollback to the original full snapshot

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zfs rollback -r pool/dataset@001

7. Destroy snapshot @001 (final cleanup)

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zfs destroy pool/dataset@001