Package kvbase exports kv level interfaces to avoid dependency cycles.

GRPCTransportFactory is the default TransportFactory, using GRPC.

InitFactoryForLocalTestCluster initializes a TxnCoordSenderFactory that can be used with LocalTestCluster.

MakeTxnMetrics returns a TxnMetrics struct that contains metrics whose windowed portions retain data for approximately histogramWindow.

NewDistSender returns a batch.Sender instance which connects to the Cockroach cluster via the supplied gossip instance.

NewDistSenderForLocalTestCluster creates a DistSender for a LocalTestCluster.

NewLeaseHolderCache creates a new leaseHolderCache of the given size.

NewRangeDescriptorCache returns a new RangeDescriptorCache which uses the given RangeDescriptorDB as the underlying source of range descriptors.

NewRangeIterator creates a new RangeIterator.

NewReplicaSlice creates a ReplicaSlice from the replicas listed in the range descriptor and using gossip to lookup node descriptors.

NewTxnCoordSenderFactory creates a new TxnCoordSenderFactory.

SenderTransportFactory wraps a client.Sender for use as a KV Transport.

Ascending means Next() will advance towards keys that compare higher.

Descending means Next() will advance towards keys that compare lower.

CanSendToFollower is used by the DistSender to determine if it needs to look up the current lease holder for a request.

MaxTxnRefreshSpansBytes is a threshold in bytes for refresh spans stored on the coordinator during the lifetime of a transaction.

ClientTestingKnobs contains testing options that dictate the behavior of the key-value client.

A DistSender provides methods to access Cockroach's monolithic, distributed key value store.

DistSenderConfig holds configuration and auxiliary objects that can be passed to NewDistSender.

DistSenderMetrics is the set of metrics for a given distributed sender.

EvictionToken holds eviction state between calls to LookupRangeDescriptor.

A LeaseHolderCache is a cache of replica descriptors keyed by range ID.

A LeaseHolderCacheShard is a cache of replica descriptors keyed by range ID.

RangeDescriptorCache is used to retrieve range descriptors for arbitrary keys.

A RangeIterator provides a mechanism for iterating over all ranges in a key span.

ReplicaInfo extends the Replica structure with the associated node descriptor.

A SendOptions structure describes the algorithm for sending RPCs to one or more replicas, depending on error conditions and how many successful responses are required.

A TxnCoordSender is the production implementation of client.TxnSender.

TxnCoordSenderFactory implements client.TxnSenderFactory.

TxnCoordSenderFactoryConfig holds configuration and auxiliary objects that can be passed to NewTxnCoordSenderFactory.

TxnMetrics holds all metrics relating to KV transactions.

RangeDescriptorDB is a type which can query range descriptors from an underlying datastore.

Transport objects can send RPCs to one or more replicas of a range.

A LatencyFunc returns the latency from this node to a remote address and a bool indicating whether the latency is valid.

A ReplicaSlice is a slice of ReplicaInfo.

ScanDirection determines the semantics of RangeIterator.Next() and RangeIterator.NeedAnother().

TransportFactory encapsulates all interaction with the RPC subsystem, allowing it to be mocked out for testing.