What do you mean by shared nothing architecture?
In distributed computing, a shared-nothing architecture consists of multiple nodes that do not share resources (e.g., memory, CPU, and NIC buffer queues). Requests are serviced by a single node, avoiding contention among nodes.
What is the problem with shared nothing architecture?
Nodes do not share (independently access) the same memory or storage. One alternative architecture is shared everything, in which requests are satisfied by arbitrary combinations of nodes. This may introduce contention, as multiple nodes may seek to update the same data at the same time.
What are the advantages of shared nothing architecture?
Shared-nothing has three main advantages: low cost, high extensibility, and high availability. The cost advantage is better than that of shared-disk which requires a special interconnection network for the disks.
How is shared nothing architecture different from shared forwarding engine architecture?
Shared Disk Architectures are write-limited where multiple writer nodes must coordinate their locks around the cluster. Shared Nothing Architectures are write limited where writes span multiple partitions necessitating a distributed two phase commit.
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