Enum Class ConsistencyLevel

java.lang.Object

java.lang.Enum<ConsistencyLevel>

com.loomcache.server.replication.ConsistencyLevel

All Implemented Interfaces:

Serializable, Comparable<ConsistencyLevel>, Constable

public enum ConsistencyLevel
extends Enum<ConsistencyLevel>

Enumeration of consistency levels for read operations.

Different levels provide different trade-offs between consistency and availability:

• STRONG: Read from leader only (linearizable consistency)
• BOUNDED_STALENESS: Read from replica if lag invalid input: '<' threshold (configurable, default 1000ms)
• EVENTUAL: Read from any active replica (eventual consistency)
• SESSION: Read from same replica within a session (session consistency)

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Enum Constant Summary

Enum Constants

Enum Constant	Description
BOUNDED_STALENESS	Bounded staleness: read from replica if lag invalid input: '<' threshold.
EVENTUAL	Eventual consistency: read from any active replica.
SESSION	Session consistency: read from same replica within a session.
STRONG	Strong consistency: all reads go to the leader.

Method Summary

Modifier and Type	Method	Description
static ConsistencyLevel	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ConsistencyLevel[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

STRONG

public static final ConsistencyLevel STRONG

Strong consistency: all reads go to the leader. Ensures linearizability but higher load on leader.

BOUNDED_STALENESS

public static final ConsistencyLevel BOUNDED_STALENESS

Bounded staleness: read from replica if lag invalid input: '<' threshold. Configurable threshold (default 1000ms). Best for applications that can tolerate slight staleness.

EVENTUAL

public static final ConsistencyLevel EVENTUAL

Eventual consistency: read from any active replica. Lowest latency but highest staleness risk.

SESSION

public static final ConsistencyLevel SESSION

Session consistency: read from same replica within a session. Provides monotonic read consistency within a session.

Method Details

values

public static ConsistencyLevel[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ConsistencyLevel valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null