Abstract: A method for improving accuracy of distributing content from a plurality of publishers to a multiplicity of users while maintaining user privacy is disclosed herein. An example method includes generating a statistical model of presentations of content from the plurality of publishers to the multiplicity of users; determining, using the statistical model for each of the multiplicity of users, one or more user identifiers corresponding to the user, to define a virtual user identifier; determining, using the statistical model and the virtual user identifiers, how many of the multiplicity of users are associated with multiple ones of the plurality of publishers; generating, using an overlap metric, a respective frequency capping value for each of the plurality of publishers; and causing each of the plurality of publishers to limit a number of times a content element is provided to the multiplicity of users in accordance with the respective frequency capping value.

Abstract: Routing data is copied from a primary data store to a local data store of a computing device. As the routing data is being copied by the computing device, changes to the data continue to occur. After copying all or a portion of the data, the computing device uses a value of a global sequence number (GSN) to determine if mutations have been made to the primary data. The routing data in the local data store is not consistent with the routing data stored in the primary data store when the value of the GSN is larger after the copying of the routing data as compared to the initial value of the GSN when the copying started. When changes have been made to the data, the computing device integrates the changes into the local data store before beginning routing operations.