Red Hat Summit 红帽全球峰会支持控制台（Console）开发人员开始试用联系人

此内容没有您所选择的语言版本。

Chapter 5. The ConfigurationBuilder API

The ConfigurationBuilder API is a programmatic configuration API in Red Hat JBoss Data Grid.
The ConfigurationBuilder API is designed to assist with:
  • Chain coding of configuration options in order to make the coding process more efficient
  • Improve the readability of the configuration
In JBoss Data Grid, the ConfigurationBuilder API is also used to enable CacheLoaders and configure both global and cache level operations.
Report a bug

5.1. Using the ConfigurationBuilder API
复制链接

Programmatic configuration in Red Hat JBoss Data Grid almost exclusively involves the ConfigurationBuilder API and the CacheManager. The following is an example of a programmatic CacheManager configuration:

Procedure 5.1. Configure the CacheManager Programmatically

EmbeddedCacheManager manager = new DefaultCacheManager("my-config-file.xml");
Cache defaultCache = manager.getCache();
Configuration c = new ConfigurationBuilder().clustering().cacheMode(CacheMode.REPL_SYNC)
.build();

String newCacheName = "repl";
manager.defineConfiguration(newCacheName, c);
Cache<String, String> cache = manager.getCache(newCacheName);
Copy to Clipboard Toggle word wrap
  1. Create a CacheManager as a starting point in an XML file. If required, this CacheManager can be programmed in runtime to the specification that meets the requirements of the use case.
  2. Create a new synchronously replicated cache programmatically.
    1. Create a new configuration object instance using the ConfigurationBuilder helper object:
      In the first line of the configuration, a new cache configuration object (named c) is created using the ConfigurationBuilder. Configuration c is assigned the default values for all cache configuration options except the cache mode, which is overridden and set to synchronous replication (REPL_SYNC).
    2. Define or register the configuration with a manager:
      In the third line of the configuration, the cache manager is used to define a named cache configuration for itself. This named cache configuration is called repl and its configuration is based on the configuration provided for cache configuration c in the first line.
    3. In the fourth line of the configuration, the cache manager is used to obtain a reference to the unique instance of the repl that is held by the cache manager. This cache instance is now ready to be used to perform operations to store and retrieve data.

Note

Programmatic configurations can only be used with JBoss Data Grid's Library mode.
Report a bug
The default cache configuration (or any customized configuration) can serve as a starting point to create a new cache.
As an example, if the infinispan-config-file.xml specifies the configuration for a replicated cache as a default and a distributed cache with a customized lifespan value is required. The required distributed cache must retain all aspects of the default cache specified in the infinispan-config-file.xml file except the mentioned aspects.

Procedure 5.2. Customize the Default Cache

EmbeddedCacheManager manager = new DefaultCacheManager("infinispan-config-file.xml");
Configuration dcc = cacheManager.getDefaultCacheConfiguration();
Configuration c = new ConfigurationBuilder().read(dcc).clustering()
	.cacheMode(CacheMode.DIST_SYNC).l1().lifespan(60000L).enable()
	.build();
manager.defineConfiguration(newCacheName, c);
Cache<String, String> cache = manager.getCache(newCacheName);
Copy to Clipboard Toggle word wrap
  1. Read an instance of a default Configuration object to get the default configuration:
  2. Use the ConfigurationBuilder to construct and modify the cache mode and L1 cache lifespan on a new configuration object:
  3. Register/define your cache configuration with a cache manager, where cacheName is name of cache specified in infinispan-config-file.xml:
  4. Get default cache with custom configuration changes.
Report a bug
A situation can arise where a new customized cache must be created using a named cache that is not the default. The steps to accomplish this are similar to those used when using the default named cache for this purpose.
The difference in approach is due to taking a named cache called replicatedCache as the base instead of the default cache.

Procedure 5.3. Creating a Customized Cache Using a Non-Default Named Cache

EmbeddedCacheManager manager = new DefaultCacheManager("infinispan-config-file.xml");
Configuration rc = cacheManager.getCacheConfiguration("replicatedCache");
Configuration c = new ConfigurationBuilder().read(rc).clustering()
	.cacheMode(CacheMode.DIST_SYNC).l1().lifespan(60000L).enable()
	.build();
manager.defineConfiguration(newCacheName, c);
Cache<String, String> cache = manager.getCache(newCacheName);
Copy to Clipboard Toggle word wrap
  1. Read the replicatedCache to get the default configuration.
  2. Use the ConfigurationBuilder to construct and modify the desired configuration on a new configuration object.
  3. Register/define your cache configuration with a cache manager where newCacheName is the name of cache specified in infinispan-config-file.xml
  4. Get a newCacheName cache with custom configuration changes.
Report a bug
As an alternative to using an xml file with default cache values to create a new cache, use the ConfigurationBuilder API to create a new cache without any XML files. The ConfigurationBuilder API is intended to provide ease of use when creating chained code for configuration options.
The following new configuration is valid for global and cache level configuration. GlobalConfiguration objects are constructed using GlobalConfigurationBuilder while Configuration objects are built using ConfigurationBuilder.
Report a bug

5.1.5. Global Configuration Examples
复制链接

5.1.5.1. Globally Configure the Transport Layer
复制链接

A commonly used configuration option is to configure the transport layer. This informs Red Hat JBoss Data Grid how a node will discover other nodes:

Example 5.1. Configuring the Transport Layer

GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
  .globalJmxStatistics().enable()
  .build();
Copy to Clipboard Toggle word wrap
Report a bug

5.1.5.2. Globally Configure the Cache Manager Name
复制链接

The following sample configuration allows you to use options from the global JMX statistics level to configure the name for a cache manager. This name distinguishes a particular cache manager from other cache managers on the same system.

Example 5.2. Configuring the Cache Manager Name

GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
  .globalJmxStatistics()
    .cacheManagerName("SalesCacheManager")
    .mBeanServerLookup(new JBossMBeanServerLookup())
    .enable()
  .build();
Copy to Clipboard Toggle word wrap
Report a bug

5.1.5.3. Globally Customize Thread Pool Executors
复制链接

Some Red Hat JBoss Data Grid features are powered by a group of thread pool executors. These executors can be customized at the global level as follows:

Example 5.3. Customize Thread Pool Executors

GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
  .replicationQueueScheduledExecutor()
    .factory(new DefaultScheduledExecutorFactory())
    .addProperty("threadNamePrefix", "RQThread")
  .build();
Copy to Clipboard Toggle word wrap
Report a bug

5.1.6. Cache Level Configuration Examples
复制链接

5.1.6.1. Cache Level Configuration for the Cluster Mode
复制链接

The following configuration allows the use of options such as the cluster mode for the cache at the cache level rather than globally:

Example 5.4. Configure Cluster Mode at Cache Level

Configuration config = new ConfigurationBuilder()
  .clustering()
    .cacheMode(CacheMode.DIST_SYNC)
    .sync()
    .l1().lifespan(25000L).enable()
    .hash().numOwners(3)
  .build();
Copy to Clipboard Toggle word wrap
Report a bug

5.1.6.2. Cache Level Eviction and Expiration Configuration
复制链接

Use the following configuration to configure expiration or eviction options for a cache at the cache level:

Example 5.5. Configuring Expiration and Eviction at the Cache Level

Configuration config = new ConfigurationBuilder()
           .eviction()
             .maxEntries(20000).strategy(EvictionStrategy.LIRS).expiration()
             .wakeUpInterval(5000L)
             .maxIdle(120000L)
           .build();
Copy to Clipboard Toggle word wrap
Report a bug

5.1.6.3. Cache Level Configuration for JTA Transactions
复制链接

To interact with a cache for JTA transaction configuration, configure the transaction layer and optionally customize the locking settings. For transactional caches, it is recommended to enable transaction recovery to deal with unfinished transactions. Additionally, it is recommended that JMX management and statistics gathering is also enabled.

Example 5.6. Configuring JTA Transactions at Cache Level

Configuration config = new ConfigurationBuilder()
  .locking()
    .concurrencyLevel(10000).isolationLevel(IsolationLevel.REPEATABLE_READ)
    .lockAcquisitionTimeout(12000L).useLockStriping(false).writeSkewCheck(true)
  .transaction()
    .transactionManagerLookup(new GenericTransactionManagerLookup())
  .recovery().enable()
  .jmxStatistics().enable()
  .build();
Copy to Clipboard Toggle word wrap
Report a bug
The following configuration can be used to configure one or more chained persistent stores at the cache level:

Example 5.7. Configuring Chained Persistent Stores at Cache Level

Configuration conf = new ConfigurationBuilder()
          .persistence()
            .passivation(false)
            .addSingleFileStore()
               .location("/tmp/firstDir")
          .persistence()
            .passivation(false)
            .addSingleFileStore()
               .location("/tmp/secondDir")
          .build();
Copy to Clipboard Toggle word wrap
Report a bug
An advanced option such as a cache level configuration for advanced externalizers can also be configured programmatically as follows:

Example 5.8. Configuring Advanced Externalizers at Cache Level

GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
  .serialization()
    .addAdvancedExternalizer(new PersonExternalizer())
    .addAdvancedExternalizer(999, new AddressExternalizer())
  .build();
Copy to Clipboard Toggle word wrap
Report a bug
返回顶部
Red Hat logoGithubredditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务，以及可以信赖的内容，帮助红帽用户创新并实现他们的目标。 了解我们当前的更新.

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情，请参阅红帽博客.

關於紅帽

我们提供强化的解决方案，使企业能够更轻松地跨平台和环境（从核心数据中心到网络边缘）工作。

Theme

© 2025 Red Hat