公开(公告)号：US10176225B2

公开(公告)日：2019-01-08

申请号：US14665026

申请日：2015-03-23

Applicant: Google LLC

Inventor： Siddartha Naidu ,  Amit Agarwal ,  Michael Sheldon ,  Andrew Kadatch ,  Jordan Tigani ,  Jeremy P. C. Condit

IPC: G06F17/30 ,  G06F8/41 ,  G06F7/00

Abstract: In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products. A system includes a first data center, a second data center, and a third data center. The multiple data centers are configured to replicate a logical collection of data that comprises multiple logical partitions of data. The system comprises a first writing subsystem that is designated to write updates to a copy of a first logical partition of data that is stored by the first data center. The system comprises a second writing subsystem that is designated to write updates to a copy of a second logical partition of data that is stored by the second data center. The system comprises a third writing subsystem that is designated to write updates to a copy of a third logical partition of data that is stored by the third data center.