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Cacheonix——Java的分布式集群缓存框架
发布日期:2016-4-25 14:4:50

  Java分布式缓存系统Ehcache,可以有效地减轻数据库的读写负担,提高Web系统的吞吐率。本文介绍的Cacheonix同样也是一个基于Java的分布式集群缓存系统,它同样也可以帮助你实现分布式缓存的部署。

  

  Cacheonix的特点如下所示:

  可靠的分布式 Java 缓存

  通过复制实现高可用性

  支持泛型的缓存 API

  可与 ORM 框架集成

  支持非多播网络

  使用数据分区实现负载均衡

  快速的本地 Java 缓存

  高性能计算

  分布式锁机制

  Cacheonix的架构图

  如下所示:

  

  Cacheonix分布式缓存XML配置

  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://www.cacheonix.com/schema/configuration http://www.cacheonix.com/schema/cacheonix-config-2.0.xsd">

  Cacheonix缓存的存取

  从配置中获取Cacheonix实例

  /**

  * Tester for CacheManager.

  */

  public final class CacheonixTest extends TestCase {

  private Cacheonix cacheonix;

  /**

  * Tests getting an instance of CacheManager using a default Cacheonix configuration.

  */

  public void testGetInstance() {

  assertNotNull("Cacheonix created in setUp() method should not be null", cacheonix);

  }

  /**

  * Sets up the fixture. This method is called before a test is executed.

  *

  * Cacheonix receives the default configuration from a cacheonix-config.xml found in a class path or

  * using a file that name is defined by system parameter cacheonix.config.xml.

  */

  protected void setUp() throws Exception {

  super.setUp();

  // Get Cacheonix using a default Cacheonix configuration. The configuration

  // is stored in the conf/cacheonix-config.xml

  cacheonix = Cacheonix.getInstance();

  }

  /**

  * Tears down the fixture. This method is called after a test is executed.

  */

  protected void tearDown() throws Exception {

  // Cache manager has be be shutdown upon application exit.

  // Note that call to shutdown() here uses unregisterSingleton

  // set to true. This is necessary to support clean restart on setUp()

  cacheonix.shutdown(ShutdownMode.GRACEFUL_SHUTDOWN, true);

  cacheonix = null;

  super.tearDown();

  }

  }

  读取缓存

  Cacheonix cacheonix = Cacheonix.getInstance();

  Cache cache = cacheonix.getCache("my.cache");

  String cachedValue = cache.get("my.key");

  删除缓存

  Cacheonix cacheonix = Cacheonix.getInstance();

  Cache cache = cacheonix.getCache("my.cache");

  String removedValue = cache.remove("my.key");

  设置缓存

  Cacheonix cacheonix = Cacheonix.getInstance();

  Cache cache = cacheonix.getCache("my.cache");

  String replacedValue = cache.put("my.key", "my.value");

  Cacheonix作为一款开源的分布式缓存框架,可以满足中型企业规模的系统架构,对提升系统性能有非常棒的作用。