Copying all keys in Redis database using MIGRATE

Question

Is it possible to copy all keys from one Redis instance to another remote instance using MIGRATE? I\'ve tried COPY, REPLACE and KEYS

Answer 1

For a big DBs with a lot of keys it's better to use --scan instead of keys, to avoid Redis lock on KEYS command:

redis-cli --scan | xargs redis-cli MIGRATE my.redis 6379 "" 0 5000 KEYS

Not really related to the question, but in case someone will need it: Redis does not support MIGRATE with a password before 3.0. After 3.0, you can add AUTH parameter to check the permission:

MIGRATE 192.168.0.33 6379 "" 0 5000 AUTH mypassword KEYS user:{info}:age