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

If you are running on non-managed¹ redis instances, the most ideal way would probably to run the target instance as a replica temporarly and then disable (after all data is copied) the replication.

see the REPLICAOF command in redis. how to apply it (all commands on the target instance):

initiate the replication: $ replicaof source_hostname_or_ip source_port

after everything is done: $ replicaof no one

If you can't use this command¹ then you can try this script on the digital ocean blog: https://www.digitalocean.com/community/tutorials/how-to-migrate-redis-data-to-a-digitalocean-managed-database#step-3-%E2%80%94-building-the-migration-script

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¹ - managed services often restrict the usage of this command see here or here.