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Chapter 2. Using Embedded Caches

Embed Data Grid caches directly in your project for in-memory data storage.

2.1. Adding the EmbeddedCacheManager Bean
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Configure your application to use embedded caches.

Procedure

  1. Add infinispan-spring-boot-starter-embedded to your project’s classpath to enable Embedded mode.

  2. Use the Spring @Autowired annotation to include an EmbeddedCacheManager bean in your Java configuration classes, as in the following example: 

    private final EmbeddedCacheManager cacheManager;

@Autowired
public YourClassName(EmbeddedCacheManager cacheManager) {
    this.cacheManager = cacheManager;
}
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You are now ready to use Data Grid caches directly within your application, as in the following example: 

cacheManager.getCache("testCache").put("testKey", "testValue");
System.out.println("Received value from cache: " + cacheManager.getCache("testCache").get("testKey"));
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2.2. Cache Manager Configuration Beans
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You can customize the cache manager with the following configuration beans:

  • InfinispanGlobalConfigurer
  • InfinispanCacheConfigurer
  • Configuration
  • InfinispanConfigurationCustomizer
  • InfinispanGlobalConfigurationCustomizer
Note

You can create one InfinispanGlobalConfigurer bean only. However you can create multiple configurations with the other beans.

InfinispanCacheConfigurer Bean

@Bean
public InfinispanCacheConfigurer cacheConfigurer() {
	return manager -> {
		final Configuration ispnConfig = new ConfigurationBuilder()
                        .clustering()
                        .cacheMode(CacheMode.LOCAL)
                        .build();

		manager.defineConfiguration("local-sync-config", ispnConfig);
	};
}
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Configuration Bean

Link the bean name to the cache that it configures, as follows: 

@Bean(name = "small-cache")
public org.infinispan.configuration.cache.Configuration smallCache() {
    return new ConfigurationBuilder()
        .read(baseCache)
        .memory().size(1000L)
        .memory().evictionType(EvictionType.COUNT)
        .build();
}

@Bean(name = "large-cache")
public org.infinispan.configuration.cache.Configuration largeCache() {
    return new ConfigurationBuilder()
        .read(baseCache)
        .memory().size(2000L)
        .build();
}
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Customizer Beans

@Bean
public InfinispanGlobalConfigurationCustomizer globalCustomizer() {
   return builder -> builder.transport().clusterName(CLUSTER_NAME);
}

@Bean
public InfinispanConfigurationCustomizer configurationCustomizer() {
   return builder -> builder.memory().evictionType(EvictionType.COUNT);
}
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2.3. Enabling Spring Cache Support
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With both embedded and remote caches, Data Grid provides an implementation of Spring Cache that you can enable.

Procedure

  • Add the @EnableCaching annotation to your application.

If the Data Grid starter detects the:

  • EmbeddedCacheManager bean, it instantiates a new SpringEmbeddedCacheManager.
  • RemoteCacheManager bean, it instantiates a new SpringRemoteCacheManager.

Reference

Spring Cache Reference

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