Technologies for managing replica caching in a distributed storage system

One or more computer-readable storage media comprising a plurality of instructions stored thereon that in response to being executed, cause a storage manager device for managing replica caching in a distributed storage system that includes a plurality of storage nodes to:

• receive a data write request from a client device to store replicas of data;
• designate one of the replicas as a primary replica;
• select (i) a first storage node of the plurality of storage nodes to store the primary replica of the data in a cache storage of the first storage node and (ii) at least a second storage node to store a non-primary replica of the data in a non-cache storage of the second storage node;
• include a hint in a first replication request of a plurality of replication requests to be transmitted, wherein the first replication request is to the first storage node and the hint is to indicate that the first storage node is to store the data in the cache storage of the first storage node as the primary replica;
• and
• transmit the replication requests to the respective storage nodes to store replicas of the data.

A storage manager device for managing replica caching in a distributed storage system that includes a plurality of storage nodes, the storage manager device comprising:

• network communication circuitry for receiving a data write request from a client device to store replicas of data;
• means for designating one of the replicas as a primary replica;
• means for selecting (i) a first storage node of the plurality of storage nodes to store the primary replica of the data in a cache storage of the first storage node and (ii) at least a second storage node to store a non-primary replica of the data in a non-cache storage of the second storage node;
• and
• means for including a hint in a first replication request of a plurality of replication requests to be transmitted, wherein the first replication request is to the first storage node and the hint is to indicate that the first storage node is to store the data in the cache storage of the first storage node as the primary replica;
• wherein the network communication circuitry is further for transmitting the replication requests to the respective storage nodes to store replicas of the data.

A method for managing replica caching in a distributed storage system that includes a plurality of storage nodes, the method comprising:

• receiving, by a storage manager device, a data write request from a client device to store replicas of data;
• designating, by the storage manager device, one of the replicas as a primary replica;
• selecting, by the storage manager device, (i) a first storage node of the plurality of storage nodes to store the primary replica of the data in a cache storage of the first storage node and (ii) at least a second storage node to store a non-primary replica of the data in a non-cache storage of the second storage node;
• including, by the storage manager device, a hint in a first replication request of a plurality of replication requests to be transmitted, wherein the first replication request is to the first storage node and the hint is to indicate that the first storage node is to store the data in the cache storage of the first storage node as the primary replica;
• and
• transmitting, by the storage manager device, the replication requests to the respective storage nodes to store replicas of the data.