DATA VERSIONING IN A MULTI-DATACENTER TOPOLOGY

摘要

Techniques are disclosed relating to data versioning in a multi-datacenter topology. In various embodiments, a computer system at a first datacenter may execute a query at a first point in time against a particular dataset that is maintained at the first datacenter. The particular dataset includes a first data record with a corresponding version number, where the version number is associated with a value of the first data record at the first point in time. In response to the first query, the computer system may receive a first results dataset that includes the first data record with its corresponding version number. The computer system may then store information indicative of the results dataset that is usable to retrieve, at a subsequent time from a historical version of the particular dataset at a second datacenter, the first data record with the same value as at the first point in time.