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Using Data Grid with Spring

Red Hat Data Grid 8.5

Add Data Grid to Spring applications

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Abstract

Add Data Grid caching capabilities to Spring-based applications.

Red Hat Data Grid
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Data Grid is a high-performance, distributed in-memory data store.

Schemaless data structure
Flexibility to store different objects as key-value pairs.
Grid-based data storage
Designed to distribute and replicate data across clusters.
Elastic scaling
Dynamically adjust the number of nodes to meet demand without service disruption.
Data interoperability
Store, retrieve, and query data in the grid from different endpoints.

Data Grid documentation
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Documentation for Data Grid is available on the Red Hat customer portal.

Data Grid downloads
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Access the Data Grid Software Downloads on the Red Hat customer portal.

Note

You must have a Red Hat account to access and download Data Grid software.

Making open source more inclusive
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Red Hat is committed to replacing problematic language in our code, documentation, and web properties. We are beginning with these four terms: master, slave, blacklist, and whitelist. Because of the enormity of this endeavor, these changes will be implemented gradually over several upcoming releases. For more details, see our CTO Chris Wright’s message.

Add Data Grid dependencies to your application and use Spring Cache annotations to store data in embedded or remote caches.

1.1. Setting up Spring caching with Data Grid
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Add the Data Grid dependencies to your Spring application project. If you use remote caches in a Data Grid Server deployment, you should also configure your Hot Rod client properties.

Important

Data Grid only supports Spring version version 6.

Procedure

  1. Add Data Grid and the Spring integration module to your pom.xml.

    • Remote caches: infinispan-spring6-remote

    • Embedded caches: infinispan-spring6-embedded

      Tip

      Spring Boot users can add the following artifacts instead of the infinispan-spring6-embedded:

      • For Spring Boot 3 add infinispan-spring-boot3-starter-embedded

  2. Configure your Hot Rod client to connect to your Data Grid Server deployment in the hotrod-client.properties file. 

    infinispan.client.hotrod.server_list = 127.0.0.1:11222
infinispan.client.hotrod.auth_username=admin
infinispan.client.hotrod.auth_password=changeme
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Spring Cache dependencies

Remote caches

<dependencies>
    <dependency>
        <groupId>org.infinispan</groupId>
        <artifactId>infinispan-spring6-remote</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${version.spring}</version>
    </dependency>
</dependencies>
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Embedded caches

<dependencies>
    <dependency>
        <groupId>org.infinispan</groupId>
        <artifactId>infinispan-spring6-embedded</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${version.spring}</version>
    </dependency>
</dependencies>
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1.2. Using Data Grid as a Spring Cache provider
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Add the @EnableCaching annotation to one of your configuration classes and then add the @Cacheable and @CacheEvict annotations to use remote or embedded caches.

Prerequisites

  • Add the Data Grid dependencies to your application project.
  • Create the required remote caches and configure Hot Rod client properties if you use a Data Grid Server deployment.

Procedure

  1. Enable cache annotations in your application context in one of the following ways:

    Declarative

    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">

        <cache:annotation-driven />

</beans>
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    Programmatic

    @EnableCaching @Configuration
public class Config {
}
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  2. Annotate methods with @Cacheable to cache return values.

    Tip

    To reference entries in the cache directly, you must include the key attribute.

  3. Annotate methods with @CacheEvict to remove old entries from the cache.

1.3. Spring Cache annotations
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The @Cacheable and @CacheEvict annotations add cache capabilities to methods.

@Cacheable
Stores return values in a cache.
@CacheEvict
Controls cache size by removing old entries.
@Cacheable

Taking Book objects as an example, if you want to cache each instance after loading it from a database with a method such as BookDao#findBook(Integer bookId), you could add the @Cacheable annotation as follows: 

@Transactional
@Cacheable(value = "books", key = "#bookId")
public Book findBook(Integer bookId) {...}
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With the preceding example, when findBook(Integer bookId) returns a Book instance it gets stored in the cache named books.

@CacheEvict

With the @CacheEvict annotation, you can specify if you want to evict the entire books cache or only the entries that match a specific #bookId.

Entire cache eviction

Annotate the deleteAllBookEntries() method with @CacheEvict and add the allEntries parameter as follows: 

@Transactional
@CacheEvict (value="books", key = "#bookId", allEntries = true)
public void deleteAllBookEntries() {...}
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Entry based eviction

Annotate the deleteBook(Integer bookId) method with @CacheEvict and specify the key associated to the entry as follows: 

@Transactional
@CacheEvict (value="books", key = "#bookId")
public void deleteBook(Integer bookId) {...}
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1.4. Configuring timeouts for cache operations
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The Data Grid Spring Cache provider defaults to blocking behaviour when performing read and write operations. Cache operations are synchronous and do not time out.

If necessary you can configure a maximum time to wait for operations to complete before they time out.

Procedure

  • Configure the following timeout properties in the context XML for your application on either SpringEmbeddedCacheManagerFactoryBean or SpringRemoteCacheManagerFactoryBean.

    For remote caches, you can also add these properties to the hotrod-client.properties file.

Expand
PropertyDescription

infinispan.spring.operation.read.timeout

Specifies the time, in milliseconds, to wait for read operations to complete. The default is 0 which means unlimited wait time.

infinispan.spring.operation.write.timeout

Specifies the time, in milliseconds, to wait for write operations to complete. The default is 0 which means unlimited wait time.

The following example shows the timeout properties in the context XML for SpringRemoteCacheManagerFactoryBean: 

<bean id="springRemoteCacheManagerConfiguredUsingConfigurationProperties"
      class="org.infinispan.spring.remote.provider.SpringRemoteCacheManagerFactoryBean">
    <property name="configurationProperties">
        <props>
           <prop key="infinispan.spring.operation.read.timeout">500</prop>
           <prop key="infinispan.spring.operation.write.timeout">700</prop>
        </props>
    </property>
</bean>
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Store session data for Spring applications in Data Grid caches and independently of the container.

2.1. Externalizing Sessions with Spring Session
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Use the Spring Session API to externalize session data to Data Grid.

Procedure

  1. Add dependencies to your pom.xml.

    • Embedded caches: infinispan-spring6-embedded

    • Remote caches: infinispan-spring6-remote

      The following example is for remote caches: 

      <dependencies>
    <dependency>
        <groupId>org.infinispan</groupId>
        <artifactId>infinispan-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.infinispan</groupId>
        <artifactId>infinispan-spring6-remote</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${version.spring}</version>
    </dependency>
    <dependency>
       <groupId>org.springframework.session</groupId>
       <artifactId>spring-session-core</artifactId>
       <version>${version.spring}</version>
   </dependency>
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-web</artifactId>
       <version>${version.spring}</version>
   </dependency>
</dependencies>
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  2. Specify the appropriate FactoryBean to expose a CacheManager instance.

    • Embedded caches: SpringEmbeddedCacheManagerFactoryBean
    • Remote caches: SpringRemoteCacheManagerFactoryBean

  3. Enable Spring Session with the appropriate annotation.

    • Embedded caches: @EnableInfinispanEmbeddedHttpSession

    • Remote caches: @EnableInfinispanRemoteHttpSession

      These annotations have optional parameters:

      • maxInactiveIntervalInSeconds sets session expiration time in seconds. The default is 1800.
      • cacheName specifies the name of the cache that stores sessions. The default is sessions.

The following example shows a complete, annotation-based configuration: 

@EnableInfinispanEmbeddedHttpSession
@Configuration
public class Config {

   @Bean
   public SpringEmbeddedCacheManagerFactoryBean springCacheManager() {
      return new SpringEmbeddedCacheManagerFactoryBean();
   }

   //An optional configuration bean responsible for replacing the default
   //cookie that obtains configuration.
   //For more information refer to the Spring Session documentation.
   @Bean
   public HttpSessionIdResolver httpSessionIdResolver() {
       return HeaderHttpSessionIdResolver.xAuthToken();
   }
}
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