Commons:Database download

See

• Meta:Data dumps
• Download site for dumps (doesn't include images/files)
  • https://download.wikimedia.org/
  • https://download.wikimedia.org/backup-index.html
  • https://download.wikimedia.org/commonswiki/
  • https://download.wikimedia.org/commonswiki/latest/
• Mailing list (this month)