Caffeine缓存增改查过期

Caffeine缓存增改查过期
1、引入pom

<dependency>
    <groupId>com.github.ben-manes.caffeine</groupId>
    <artifactId>caffeine</artifactId>
    <version>2.9.2</version>
</dependency>

2、测试类
@Slf4j
@RunWith(SpringRunner.class)
@SpringBootTest(classes = ReportApplication.class)
public class LocalCacheTest {

@Test
public void test() throws InterruptedException {
    Cache<Object, String> cache1 = Caffeine.newBuilder()
            .expireAfterWrite(1, TimeUnit.SECONDS)
            .maximumSize(1000)
            .build();
    String key = "test";
    cache1.put(key, "Okok10000");
    System.out.println(cache1.getIfPresent(key));
    System.out.println(cache1.getIfPresent(key));
    cache1.put(key, "hello0");
    System.out.println(cache1.getIfPresent(key));
    Thread.sleep(1000);
    System.out.println(cache1.getIfPresent(key));


}

}

缓存----》内存 缓存过期时间和是否需要用缓存想好了再用

最后

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