Patent ID: 7966295

Claim:
A system for updating a subscriber, the system comprising: a server; and a database coupled to the server; wherein the database has a plurality of link elements organized into a linked list; the plurality of link elements having: a plurality of data link elements associated with data entries; at least one marker link element not associated with any data entry; at least one subscriber communicating with the server; at least one auxiliary link element, not organized within the linked list, for linking at least two marker link elements to regenerate an update message lost in transit; wherein the server has: means for stepping through the plurality of link elements for updated entries; means for determining if each stepped link element is a data link element; means for formatting updated data associated with the data link element and appending the formatted data to an update message; wherein the update message, at a specified time, is sent to the subscriber being currently serviced by the server and a marker link element, comprising a left pointer, a right pointer and a reference counter, is inserted at a specified position in the linked list to indicate update of the linked list.