Tracking data in an online environment

摘要: To detect potentially malicious behavior or fraud, online environments maintain counts of a variety data items received via webpage an application. A bucket scheme to track and retrieve these is described. The system maintains rolling count over period time. comprises three different tiers, each containing buckets corresponding periods When new item received, one in tier updated. updated by generating address initiating incrementing counter counting the number times was received. specified time, counters plurality are read aggregated.