Package io.github.dhruv1110.jcachex.spring.utilities

Class EvictionStrategyFactory

java.lang.Object

io.github.dhruv1110.jcachex.spring.utilities.EvictionStrategyFactory

public class EvictionStrategyFactory
extends Object

Factory for creating eviction strategies from string configuration values. This factory provides a bridge between Spring's string-based configuration and JCacheX's programmatic eviction strategy configuration. It supports all built-in eviction strategies and can be extended for custom strategies.

Supported Strategies:

• LRU: Least Recently Used (default)
• LFU: Least Frequently Used
• FIFO: First In, First Out
• FILO: First In, Last Out
• IDLE_TIME: Based on idle time
• WEIGHT: Based on entry weight
• COMPOSITE: Combines multiple strategies

Usage Examples:

In Configuration:

 jcachex:
   caches:
     users:
       evictionStrategy: LRU
     sessions:
       evictionStrategy: LFU
     files:
       evictionStrategy: WEIGHT
       maximumWeight: 10485760  # 10MB
 

Programmatic Usage:

 EvictionStrategyFactory factory = new EvictionStrategyFactory();
 EvictionStrategy<String, User> lruStrategy = factory.createStrategy("LRU");
 EvictionStrategy<String, byte[]> weightStrategy = factory.createStrategy("WEIGHT");
 

Since:

1.0.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	EvictionStrategyFactory.StrategyProvider	Functional interface for creating eviction strategies.

Constructor Summary

Constructors

Constructor	Description
EvictionStrategyFactory()

Method Summary

Modifier and Type	Method	Description
<K,V> io.github.dhruv1110.jcachex.eviction.EvictionStrategy<K,V>	createStrategy(String strategyName)	Creates an eviction strategy from a string configuration using default config.
<K,V> io.github.dhruv1110.jcachex.eviction.EvictionStrategy<K,V>	createStrategy(String strategyName, JCacheXProperties.CacheConfig config)	Creates an eviction strategy from a string configuration.
Set<String>	getAvailableStrategies()	Gets all registered strategy names.
void	registerStrategy(String name, EvictionStrategyFactory.StrategyProvider provider)	Registers a custom eviction strategy.

Methods inherited from class java.lang.Object

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

Constructor Detail

EvictionStrategyFactory

public EvictionStrategyFactory()

Method Detail

createStrategy

public <K,V> io.github.dhruv1110.jcachex.eviction.EvictionStrategy<K,V> createStrategy(String strategyName,
                                                                                                   JCacheXProperties.CacheConfig config)

Creates an eviction strategy from a string configuration.

Parameters:

strategyName - the name of the eviction strategy (case-insensitive)

config - optional cache configuration for strategy customization

Returns:

the created eviction strategy

Throws:

IllegalArgumentException - if the strategy name is not recognized

createStrategy

public <K,V> io.github.dhruv1110.jcachex.eviction.EvictionStrategy<K,V> createStrategy(String strategyName)

Creates an eviction strategy from a string configuration using default config.

Parameters:

strategyName - the name of the eviction strategy (case-insensitive)

Returns:

the created eviction strategy

Throws:

IllegalArgumentException - if the strategy name is not recognized

registerStrategy

public void registerStrategy(String name,
                             EvictionStrategyFactory.StrategyProvider provider)

Registers a custom eviction strategy.

Parameters:

name - the strategy name (case-insensitive)

provider - the strategy provider function

getAvailableStrategies

public Set<String> getAvailableStrategies()

Gets all registered strategy names.

Returns:

set of strategy names