Java Code Examples for com.github.benmanes.caffeine.cache.LoadingCache#get()

The following examples show how to use com.github.benmanes.caffeine.cache.LoadingCache#get() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: CacheTest.java    From zuihou-admin-boot with Apache License 2.0 6 votes vote down vote up 
@Test
public void test() {
    LoadingCache<String, Map<String, Object>> caches = Caffeine.newBuilder()
            .maximumSize(10)
            .refreshAfterWrite(10000, TimeUnit.MINUTES)
            .build(new CacheLoader<String, Map<String, Object>>() {
                       @Nullable
                       @Override
                       public Map<String, Object> load(@NonNull String s) throws Exception {

                           Map<String, Object> map = new HashMap<>();
                           map.put("aaa", "aaa");
                           return map;
                       }
                   }
            );


    Map<String, Object> aaa = caches.get("aaa");
    System.out.println(aaa);
    Map<String, Object> bbb = caches.get("aaa");
    System.out.println(bbb);
    Map<String, Object> bbb1 = caches.get("aaa1");
    System.out.println(bbb1);

}
Example 2
Source File: CacheTest.java    From zuihou-admin-cloud with Apache License 2.0 6 votes vote down vote up 
@Test
public void test() {
    LoadingCache<String, Map<String, Object>> caches = Caffeine.newBuilder()
            .maximumSize(10)
            .refreshAfterWrite(10000, TimeUnit.MINUTES)
            .build(new CacheLoader<String, Map<String, Object>>() {
                       @Nullable
                       @Override
                       public Map<String, Object> load(@NonNull String s) throws Exception {

                           Map<String, Object> map = new HashMap<>();
                           map.put("aaa", "aaa");
                           return map;
                       }
                   }
            );


    Map<String, Object> aaa = caches.get("aaa");
    System.out.println(aaa);
    Map<String, Object> bbb = caches.get("aaa");
    System.out.println(bbb);
    Map<String, Object> bbb1 = caches.get("aaa1");
    System.out.println(bbb1);

}
Example 3
Source File: MetricsStatsCounterTest.java    From caffeine with Apache License 2.0 6 votes vote down vote up 
@Test
public void metrics() {
  // Use a registry that is exported using a Reporter (via console, JMX, Graphite, etc)
  MetricRegistry registry = new MetricRegistry();

  // Create the cache with a dedicated, uniquely named stats counter
  LoadingCache<Integer, Integer> cache = Caffeine.newBuilder()
      .recordStats(() -> new MetricsStatsCounter(registry, "example"))
      .build(key -> key);

  // Perform application work
  for (int i = 0; i < 4; i++) {
    cache.get(1);
  }

  // Statistics can be queried and reported on
  assertThat(cache.stats().hitCount(), is(3L));
  assertThat(registry.counter("example.hits").getCount(), is(3L));
}
Example 4
Source File: GuildSettingsUtils.java    From SkyBot with GNU Affero General Public License v3.0 5 votes vote down vote up 
private static GuildSettings registerNewGuild(Guild g, Variables variables, GuildSettings newGuildSettings) {
    final LoadingCache<Long, GuildSettings> guildSettingsCache = variables.getGuildSettingsCache();
    final GuildSettings settingForGuild = guildSettingsCache.get(g.getIdLong());

    if (settingForGuild != null) {
        return settingForGuild;
    }

    variables.getDatabaseAdapter().registerNewGuild(newGuildSettings, (bool) -> null);
    variables.getGuildSettingsCache().put(g.getIdLong(), newGuildSettings);

    return newGuildSettings;
}
Example 5
Source File: CacheMetricsCollectorTest.java    From client_java with Apache License 2.0 5 votes vote down vote up 
@SuppressWarnings("unchecked")
@Test
public void loadingCacheExposesMetricsForLoadsAndExceptions() throws Exception {
    CacheLoader<String, String> loader = mock(CacheLoader.class);
    when(loader.load(anyString()))
            .thenReturn("First User")
            .thenThrow(new RuntimeException("Seconds time fails"))
            .thenReturn("Third User");

    LoadingCache<String, String> cache = Caffeine.newBuilder().recordStats().build(loader);
    CollectorRegistry registry = new CollectorRegistry();
    CacheMetricsCollector collector = new CacheMetricsCollector().register(registry);
    collector.addCache("loadingusers", cache);

    cache.get("user1");
    cache.get("user1");
    try {
        cache.get("user2");
    } catch (Exception e) {
        // ignoring.
    }
    cache.get("user3");

    assertMetric(registry, "caffeine_cache_hit_total", "loadingusers", 1.0);
    assertMetric(registry, "caffeine_cache_miss_total", "loadingusers", 3.0);

    assertMetric(registry, "caffeine_cache_load_failure_total", "loadingusers", 1.0);
    assertMetric(registry, "caffeine_cache_loads_total", "loadingusers", 3.0);

    assertMetric(registry, "caffeine_cache_load_duration_seconds_count", "loadingusers", 3.0);
    assertMetricGreatThan(registry, "caffeine_cache_load_duration_seconds_sum", "loadingusers", 0.0);
}