Class AccessPatternAnalyzer

java.lang.Object

com.loomcache.server.metrics.AccessPatternAnalyzer

public class AccessPatternAnalyzer
extends Object

Detects and analyzes access patterns in cache operations. Identifies temporal patterns, distribution types, and bursty behavior.

Thread-safe using ReentrantReadWriteLock.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	AccessPatternAnalyzer.AccessRecord	Access record.
static final record	AccessPatternAnalyzer.DistributionStats	Distribution statistics.
static enum	AccessPatternAnalyzer.PatternType	Pattern types detected in access data.
static final record	AccessPatternAnalyzer.TemporalPattern	Temporal pattern information.

Constructor Summary

Constructors

Constructor	Description
AccessPatternAnalyzer()	Create a new AccessPatternAnalyzer.

Method Summary

Modifier and Type	Method	Description
void	clear()	Clear all recorded accesses.
AccessPatternAnalyzer.PatternType	detectPattern(long window)	Detect the access pattern type in the given time window.
int	getAccessCount()	Get number of recorded accesses.
AccessPatternAnalyzer.DistributionStats	getKeyDistribution()	Get key distribution statistics.
AccessPatternAnalyzer.TemporalPattern	getTemporalPattern()	Get temporal pattern information.
int	getUniqueKeyCount()	Get number of unique keys accessed.
void	recordAccess(String key, long latencyNs)	Record a key access.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AccessPatternAnalyzer

public AccessPatternAnalyzer()

Create a new AccessPatternAnalyzer.

Method Details

recordAccess

public void recordAccess(String key,
 long latencyNs)

Record a key access.

Parameters:

key - the accessed key

latencyNs - access latency in nanoseconds

detectPattern

public AccessPatternAnalyzer.PatternType detectPattern(long window)

Detect the access pattern type in the given time window.

Parameters:

window - the time window in milliseconds

Returns:

detected pattern type

getKeyDistribution

public AccessPatternAnalyzer.DistributionStats getKeyDistribution()

Get key distribution statistics.

Returns:

distribution statistics

getTemporalPattern

public AccessPatternAnalyzer.TemporalPattern getTemporalPattern()

Get temporal pattern information.

Returns:

temporal pattern

clear

public void clear()

Clear all recorded accesses.

getAccessCount

public int getAccessCount()

Get number of recorded accesses.

Returns:

access count

getUniqueKeyCount

public int getUniqueKeyCount()

Get number of unique keys accessed.

Returns:

unique key count