This would be stored in a numeric value. IndexTank (and Searchify which runs IndexTank) stores numeric values in a normal array in RAM. So an update is essent

This would be stored in a numeric value. IndexTank (and Searchify which runs IndexTank) stores numeric values in a normal array in RAM. So an update is essentially equivalent to: array[index] = updatedValue; And then you can sort or filter by these numeric values, as well as the usual text searching. More info in the docs here: http://www.searchify.com/documentation/python-client#document-variables http://www.searchify.com/documentation/python-client#documen... Note that if you update a text field, it does a normal reindex (although it's true real-time in IndexTank).