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Migrate DB From Redis 7.4 to 7.2 and Skip the RDB Version 12 Error

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After I copy redis dump.rdb from redis 7.4 to my Macbook homebrew redis 7.2 I got Can’t handle RDB format version 12 error:

# /opt/homebrew/opt/redis/bin/redis-server /opt/homebrew/etc/redis.conf

20066:C 17 Apr 2025 10:39:34.935 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

20066:C 17 Apr 2025 10:39:34.935 * Redis version=7.2.7, bits=64, commit=00000000, modified=0, pid=20066, just started

20066:C 17 Apr 2025 10:39:34.935 * Configuration loaded

20066:M 17 Apr 2025 10:39:34.935 * Increased maximum number of open files to 10032 (it was originally set to 256).

20066:M 17 Apr 2025 10:39:34.935 * monotonic clock: POSIX clock_gettime

 
 
Redis 7.2.7 (00000000/0) 64 bit

 
Running in standalone mode

Port: 6379

PID: 20066

 
 
      https://redis.io

 
 
20066:M 17 Apr 2025 10:39:34.936 # WARNING: The TCP backlog setting of 511 cannot be enforced because kern.ipc.somaxconn is set to the lower value of 128.

20066:M 17 Apr 2025 10:39:34.936 * Server initialized

20066:M 17 Apr 2025 10:39:34.936 # Can't handle RDB format version 12

20066:M 17 Apr 2025 10:39:34.936 # Fatal error loading the DB, check server logs. Exiting.

Two option available, upgrade redis version via redis.io

Using high version

brew tap redis/redis

brew install --cask redis

The solution is ugly as redis will give you rc version of redis and it depend on the LLVM@18, which takes 1.7GB…

Stay redis 7.2

redis-cli shutdown

brew uninstall redis

brew untap redis/redis

# make sure your DB no need!

rm /opt/homebrew/var/db/redis/dump.rdb

rm /opt/homebrew/etc/redis-sentinel.conf

rm /opt/homebrew/etc/redis.conf

rm /opt/homebrew/etc/redis.conf.default

brew install redis

brew services start redis

Using redis-dump to dump and restore DB.

redis-dump -u 127.0.0.1:6379 -d 0 > db_db0.json

cat db_db0.json | redis-load -d 0

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