US Patent 12001408 Techniques for efficient migration of key-value data

The present disclosure relates to a system and techniques for enabling migration of data between data storage devices without disruption to an application that relies upon the data. In some embodiments, this may involve the insertion of a redirect command into a mutation log. Upon receiving a transaction that relates to a data value, a transactor host may access the mutation log. Upon detecting the redirect command, the transactor host may generate a new mutation log in a second memory location which includes a reference to the mutation log. New mutations generated by the mutation log are then written to the new mutation log.