Systems and methods for preventing data collisions in multiple access postal system data storage systems

An illustrative data structure is provided using a structured table (200) that uses a split primary key including a first key (210) (partition key) and a second key (220) (row key) along with a timestamp key (230), but that does not otherwise utilize uniform columns that could be used as a key. The partition key (210) that is utilized is unusually fine in that it consists of an individual user identifier that is unique to the system and/or across multiple systems used in an enterprise. Additionally, the system may limit access to one session per individual partition key.