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US 10,455,045 B2Granted
Automatic data replica manager in distributed caching and data processing systems
AssigneeSamsung Electronics Co., Ltd.
InventorsZhengyu Yang, Jiayin Wang, Thomas David Evans
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Abstract
A method of data storage includes determining a latency distance from a primary node to each of two or more replica nodes, choosing a preferred replica node of the two or more replica nodes based on the determined latency distances, and write-caching data into the preferred replica node.
Claims9
A method for enabling fault tolerance of a datacenter cluster caching system having one or more replica nodes in the same tier, the method comprising:
- detecting a failure of the datacenter cluster;
- performing load balancing among nodes of the datacenter cluster in accordance with the detected failure by moving data among storage tiers of the nodes;
- and
- migrating replica data from a first replica node in the datacenter cluster to a second replica node in the datacenter cluster by:
- writing new incoming data on the second replica node;
- and
- maintaining unchanged cached data on the first replica node,
- wherein the load balancing is performed without pausing a subsystem corresponding to the detected failure, and without copying an entirety of a dataset of a node of the datacenter cluster corresponding to the detected failure.
5 more elements
Dependencies are inferred from the claim text.