Package com.datastax.driver.core.policies

Policies that allow to control some of the behavior of the DataStax Java driver for Cassandra.

See: Description

Interface Summary

Interface	Description
AddressTranslater	Translates IP addresses received from Cassandra nodes into locally queriable addresses.
ChainableLoadBalancingPolicy	A load balancing policy that wraps another policy.
CloseableAddressTranslater	Extends AddressTranslater for implementations that need to free some resources at Cluster shutdown.
CloseableLoadBalancingPolicy	A load balancing policy that wants to be notified at cluster shutdown.
LoadBalancingPolicy	The policy that decides which Cassandra hosts to contact for each new query.
ReconnectionPolicy	Policy that decides how often the reconnection to a dead node is attempted.
ReconnectionPolicy.ReconnectionSchedule	Schedules reconnection attempts to a node.
RetryPolicy	A policy that defines a default behavior to adopt when a request returns a TimeoutException or an UnavailableException.
SpeculativeExecutionPolicy	The policy that decides if the driver will send speculative queries to the next hosts when the current host takes too long to respond.
SpeculativeExecutionPolicy.SpeculativeExecutionPlan	A plan that governs speculative executions for a given query.

Class Summary

Class	Description
ConstantReconnectionPolicy	A reconnection policy that waits a constant time between each reconnection attempt.
ConstantSpeculativeExecutionPolicy	A SpeculativeExecutionPolicy that schedules a given number of speculative executions, separated by a fixed delay.
DCAwareRoundRobinPolicy	A data-center aware Round-robin load balancing policy.
DCAwareRoundRobinPolicy.Builder	Helper class to build the policy.
DefaultRetryPolicy	The default retry policy.
DowngradingConsistencyRetryPolicy	A retry policy that sometimes retry with a lower consistency level than the one initially requested.
EC2MultiRegionAddressTranslater	AddressTranslater implementation for a multi-region EC2 deployment where clients are also deployed in EC2.
ExponentialReconnectionPolicy	A reconnection policy that waits exponentially longer between each reconnection attempt (but keeps a constant delay once a maximum delay is reached).
FallthroughRetryPolicy	A retry policy that never retry (nor ignore).
HostFilterPolicy	A load balancing policy wrapper that ensures that only hosts matching the predicate will ever be returned.
IdentityTranslater	The default AddressTranslater used by the driver that do no translation.
LatencyAwarePolicy	A wrapper load balancing policy that adds latency awareness to a child policy.
LatencyAwarePolicy.Builder	Helper builder object to create a latency aware policy.
LatencyAwarePolicy.Snapshot	An immutable snapshot of the per-host scores (and stats in general) maintained by LatencyAwarePolicy to base its decision upon.
LatencyAwarePolicy.Snapshot.Stats	A snapshot of the statistics on a given host kept by LatencyAwarePolicy.
LoggingRetryPolicy	A retry policy that wraps another policy, logging the decision made by its sub-policy.
NoSpeculativeExecutionPolicy	A SpeculativeExecutionPolicy that never schedules speculative executions.
PercentileSpeculativeExecutionPolicy	A policy that triggers speculative executions when the request to the current host is above a given percentile.
Policies	Policies configured for a Cluster instance.
RetryPolicy.RetryDecision	A retry decision to adopt on a Cassandra exception (read/write timeout or unavailable exception).
RoundRobinPolicy	A Round-robin load balancing policy.
TokenAwarePolicy	A wrapper load balancing policy that add token awareness to a child policy.
WhiteListPolicy	A load balancing policy wrapper that ensure that only hosts from a provided white list will ever be returned.

Enum Summary

Enum	Description
RetryPolicy.RetryDecision.Type	The type of retry decisions.

Package com.datastax.driver.core.policies Description

Policies that allow to control some of the behavior of the DataStax Java driver for Cassandra.