PROSAGA码农传奇-google guava-用超时创建HashMap.Will Guava缓存工作？

用超时创建HashMap.Will Guava缓存工作？

作者: 句号了
发布时间: 2024-12-29 01:23:16 (1月前)
转自：

<div class =“post-text”itemprop =“text”>
  <P>
    请参阅guava的CacheBuilder上的javadoc（它包含示例）：
  </p>
  <P>
    <a href="http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheBuilder.html" rel="noreferrer">
      http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheBuilder.html
    </A>
  </p>
  <P>
    这个：
    <a href="https://code.google.com/p/guava-libraries/wiki/CachesExplained" rel="noreferrer">
      https://code.google.com/p/guava-libraries/wiki/CachesExplained
    </A>
  </p>
  <P>
    的<strong>
      UPDATE
    </强>
    ：没有必要使用缓存加载器，或者有一个加载方法。此测试用例通过：
  </p>
   <pre>
    <code>
      @Test
public void testManualInsertion() {

Cache<String, String> cache = CacheBuilder.newBuilder()
            .maximumSize(1000)
            .expireAfterWrite(10, TimeUnit.MINUTES)
            .removalListener(new MyRemovalListener())
            .concurrencyLevel(4)
            .recordStats()
            .build();

cache.put("someKey", "someValue");

assertEquals("someValue", cache.getIfPresent("someKey"));

}

</code>
  </pre>
</DIV>