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Chapter 2. Running in Embedded Mode


Embed the Data Grid library in your project for in-memory data storage.

2.1. Adding the EmbeddedCacheManager Bean

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

    This starter operates in Remote Client/Server mode with infinispan-spring-boot-starter-remote on the classpath by default.

  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;
    }

    You are now ready to use Data Grid in Embedded Mode. Here is a simple example:

    cacheManager.getCache("testCache").put("testKey", "testValue");
    System.out.println("Received value from cache: " + cacheManager.getCache("testCache").get("testKey"));

2.2. Cache Manager Configuration Beans

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);
	};
}

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();
}

Customizer Beans

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

@Bean
public InfinispanConfigurationCustomizer configurationCustomizer() {
   return builder -> builder.memory().evictionType(EvictionType.COUNT);
}

2.3. Enabling Spring Cache Support

Add the @EnableCaching annotation to your application to enable Spring Cache support.

When this starter detects the EmbeddedCacheManager bean, it instantiates a new SpringEmbeddedCacheManager, which provides an implementation of Spring Cache.

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