SYSTEM AND METHOD FOR OPTIMIZING EFFICIENCY OF REPLICATED NETWORK SERVICES

摘要

A system and method for controlling a selectable level of consistency in a replicated data system (FIG. 3) uses consistency metrics to determine when to perform updates between data replicas. Each replica tracks one or more consistency metrics, and compares the consis tency metrics to predetermined boundary values. If a metric value exceeds a boundary value, updates are performed. The metrics can include numerical error, order error and staleness.