How do you implement Redis backup and disaster recovery?

Redis backup combines RDB snapshots and AOF logging with automated procedures for data protection and recovery.\n\n• **RDB Snapshots:**\nPoint-in-time backups that create compact binary files, fast to restore, ideal for scheduled backups and disaster recovery.\n\nsave 900 1 # Auto-save every 15 minutes if 1+ keys changed\nBGSAVE # Manual background snapshot\n\n• **AOF (Append Only File):**\nLogs every write operation, provides better durability, allows point-in-time recovery, but creates larger files.\n\nappendonly yes\nappendfsync everysec # Sync every second\n\n• **Automated Backup Script:**\n#!/bin/bash\nredis-cli BGSAVE\ncp /var/lib/redis/dump.rdb /backup/redis_20251005.rdb\naws s3 cp /backup/redis_20251005.rdb s3://backup-bucket/\n\n• **Replication for HA:**\nSet up master-replica configuration, automatic failover with Sentinel, and cross-datacenter replication for disaster recovery.\n\nreplicaof master_host 6379\nmasterauth master_password\n\n• **Recovery Procedures:**\nStop Redis, replace data files, restart service, and verify data integrity after restoration.\n\n• **Monitoring:**\nTrack backup completion, verify file integrity, monitor replication lag, and test restore procedures regularly.\n\n• **Best Practices:**\nCombine RDB and AOF, store backups offsite, encrypt backup files, document recovery procedures, and practice disaster scenarios.