Mysql is not a nosql db with their “easy” scaling out... You cannot run multiple instances on one data folder, this wound’t work - locking, caching and data consistency cannot be maintaned that way. Mysql uses classic master/slave replication process and it is not that simple. You need to explicitly configure this and then writes to master are automatically mirrored to slaves. There are currently more modes of replications. Use google and look for terms like mysql replication
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Mysql is not a nosql db with their “easy” scaling out... You cannot run multiple instances on one data folder, this wound’t work - locking, caching and data consistency cannot be maintaned that way. Mysql uses classic master/slave replication process and it is not that simple. You need to explicitly configure this and then writes to master are automatically mirrored to slaves. There are currently more modes of replications. Use google and look for terms like mysql replication