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Comment From: sundb
If you haven't used the "break change" command, you can enable AOF in 7.4 and play it back in 7.2.
Comment From: leonchen83
redis-rdb-cli-0.9.7 supports downgrade migration from Redis 7.4 / 8.0 to Redis 7.2
The steps are as follows:
$ sed -i 's/dump_rdb_version=-1/dump_rdb_version=11/g' /path/to/redis-rdb-cli/conf/redis-rdb-cli.conf
$ rmt -s redis://com.redis74:6379 -m redis://com.redis72:6379 -r
However, there is a limitation: Redis 7.4 introduced a new data structure called TTL Hash, which allows setting expiration times on individual fields. This structure does not exist in Redis7.2. During the downgrade migration, TTL Hash entries will be migrated as regular Hashes, and the per-field TTLs will be lost.