Redo-logging for partitioned in-memory datasets

A data storage device comprising:

• a first storage module configured to store a plurality of data sets;
• second and third storage modules;
• a control module in communication with the first, second and third storage modules and configured to (a) receive requests for operations to be carried out on the plurality of data sets in the first storage module, (b) execute the received requests and (c) copy the plurality of data sets in the first storage module to the second storage module at a predetermined time;
• and
• a buffer in communication with the controller;
• wherein the control module is further configured to:
• a) add the received requests for operations to the buffer;
• b) persist the buffer to the third storage module by way of synchronization;
• c) mark the requests for operations used for updating the third storage module;
• d) initialize the plurality of data sets in the first storage module from the second storage module;
• and
• e) carry out operations associated with the received requests from the third storage module in a recovery scenario.