摘要:
A system is described for providing scalable in-memory caching for a distributed database. The system may include a cache, an interface, a non-volatile memory and a processor. The cache may store a cached copy of data items stored in the non-volatile memory. The interface may communicate with devices and a replication server. The non-volatile memory may store the data items. The processor may receive an update to a data item from a device to be applied to the non-volatile memory. The processor may apply the update to the cache. The processor may generate an acknowledgement indicating that the update was applied to the non-volatile memory and may communicate the acknowledgment to the device. The processor may then communicate the update to a replication server. The processor may apply the update to the non-volatile memory upon receiving an indication that the update was stored by the replication server.
摘要:
Network position information for a node in a network is determined. An infrastructure node in the network is identified for storing the network position information for the node based on a network distance to the infrastructure node.
摘要:
A method of allocating servers for range requests includes receiving a range request for items in a database that is distributed across storage devices that are accessible through corresponding servers in a network that includes the storage devices and the servers; and initializing a server-allocation value for the range request, where the server-allocation value specifies a number of servers to allocate for executing the range request. The method further includes executing the range request by allocating the servers and using the allocated servers to provide values from the range request to a client that accesses the network; and updating the server-allocation value while executing the range request to improve a consumption rate for the client by comparing changes in the consumption rate with changes in the number of allocated servers.