@Test
public void testFIFO() {
CacheManager manager = CacheManager.getInstance();
Cache cache = manager.createCache();
cache.setEjectionPolicy(EjectionPolicy.FIFO);
cache.setMaxCacheSize(4);
cache.insertElement("key1", "val1");
synchronized (this) {
try {
wait(10);
} catch (InterruptedException e) {
}
}
cache.insertElement("key2", "val2");
cache.insertElement("key3", "val3");
cache.insertElement("key4", "val4");
Assert.assertEquals(cache.get("key2"), "val2");
Assert.assertEquals(cache.get("key3"), "val3");
Assert.assertEquals(cache.get("key4"), "val4");
Assert.assertEquals(cache.get("key1"), "val1");
Assert.assertEquals(4, cache.getSize());
cache.insertElement("key5", "val5");
Assert.assertEquals(4, cache.getSize());
Assert.assertEquals(cache.get("key3"), "val3");
Assert.assertEquals(cache.get("key4"), "val4");
Assert.assertEquals(cache.get("key2"), "val2");
Assert.assertEquals(cache.get("key5"), "val5");
Assert.assertNull(cache.get("key1"));
}
@Test
public void testLRU() {
CacheManager manager = CacheManager.getInstance();
Cache cache = manager.createCache();
cache.setEjectionPolicy(EjectionPolicy.LRU);
cache.setMaxCacheSize(4);
cache.insertElement("key1", "val1");
cache.insertElement("key2", "val2");
cache.insertElement("key3", "val3");
cache.insertElement("key4", "val4");
Assert.assertEquals(cache.get("key2"), "val2");
Assert.assertEquals(cache.get("key3"), "val3");
Assert.assertEquals(cache.get("key4"), "val4");
Assert.assertEquals(cache.get("key1"), "val1");
Assert.assertEquals(4, cache.getSize());
cache.insertElement("key5", "val5");
Assert.assertEquals(4, cache.getSize());
Assert.assertEquals(cache.get("key3"), "val3");
Assert.assertEquals(cache.get("key4"), "val4");
Assert.assertEquals(cache.get("key1"), "val1");
Assert.assertEquals(cache.get("key5"), "val5");
Assert.assertNull(cache.get("key2"));
}
/**
* Constructor taking global props.
*
* @param props
*/
public SessionCache(Props props) {
CacheManager manager = CacheManager.getInstance();
cache = manager.createCache();
cache.setEjectionPolicy(EjectionPolicy.LRU);
cache.setMaxCacheSize(props.getInt("max.num.sessions", MAX_NUM_SESSIONS));
cache.setExpiryTimeToLiveMs(props.getLong("session.time.to.live", SESSION_TIME_TO_LIVE));
}
@Test
public void testTimeToLiveExpiry() {
CacheManager.setUpdateFrequency(200);
CacheManager manager = CacheManager.getInstance();
Cache cache = manager.createCache();
cache.setUpdateFrequencyMs(200);
cache.setEjectionPolicy(EjectionPolicy.FIFO);
cache.setExpiryTimeToLiveMs(4500);
cache.insertElement("key1", "val1");
synchronized (this) {
try {
wait(1000);
} catch (InterruptedException e) {
}
}
Assert.assertEquals(cache.get("key1"), "val1");
cache.insertElement("key2", "val2");
synchronized (this) {
try {
wait(4000);
} catch (InterruptedException e) {
}
}
Assert.assertNull(cache.get("key1"));
Assert.assertEquals("val2", cache.get("key2"));
synchronized (this) {
try {
wait(1000);
} catch (InterruptedException e) {
}
}
Assert.assertNull(cache.get("key2"));
}