@Test
public void testCacheLocalEntries() {
int n = 2;
String mapName = "test";
Config config = new Config();
final NearCacheConfig nearCacheConfig = new NearCacheConfig();
nearCacheConfig.setCacheLocalEntries(true);
nearCacheConfig.setInvalidateOnChange(false);
final MapConfig mapConfig = config.getMapConfig(mapName);
mapConfig.setNearCacheConfig(nearCacheConfig);
HazelcastInstance instance = createHazelcastInstanceFactory(n).newInstances(config)[0];
IMap<String, String> map = instance.getMap(mapName);
int noOfEntries = 100;
for (int i = 0; i < noOfEntries; i++) {
map.put("key" + i, "value" + i);
}
// warm-up cache
for (int i = 0; i < noOfEntries; i++) {
map.get("key" + i);
}
NearCache nearCache = getNearCache(mapName, instance);
assertEquals(noOfEntries, nearCache.size());
}
@Test
public void testNearCacheEvictionByUsingMapClear() throws InterruptedException {
final Config cfg = new Config();
final String mapName = "testNearCacheEviction";
final NearCacheConfig nearCacheConfig = new NearCacheConfig();
nearCacheConfig.setInvalidateOnChange(true);
cfg.getMapConfig(mapName).setNearCacheConfig(nearCacheConfig);
final TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(2);
final HazelcastInstance hazelcastInstance1 = factory.newHazelcastInstance(cfg);
final HazelcastInstance hazelcastInstance2 = factory.newHazelcastInstance(cfg);
final IMap map1 = hazelcastInstance1.getMap(mapName);
final IMap map2 = hazelcastInstance2.getMap(mapName);
final int size = 10;
// populate map.
for (int i = 0; i < size; i++) {
map1.put(i, i);
}
// populate near cache
for (int i = 0; i < size; i++) {
map1.get(i);
map2.get(i);
}
// clear map should trigger near cache eviction.
map1.clear();
for (int i = 0; i < size; i++) {
assertNull(map1.get(i));
}
}
protected ClientConfig newClientConfig(String mapName) {
NearCacheConfig nearCacheConfig = new NearCacheConfig();
nearCacheConfig.setInMemoryFormat(getNearCacheInMemoryFormat());
nearCacheConfig.setName(mapName);
nearCacheConfig.setInvalidateOnChange(true);
nearCacheConfig.setCacheLocalEntries(true);
ClientConfig clientConfig = new ClientConfig();
clientConfig.addNearCacheConfig(nearCacheConfig);
return clientConfig;
}
@Test
public void testNearCacheEvictionByUsingMapTTLEviction() throws InterruptedException {
final int instanceCount = 3;
final int ttl = 1;
final int size = 1000;
final Config cfg = new Config();
final String mapName = "_testNearCacheEvictionByUsingMapTTLEviction_";
final NearCacheConfig nearCacheConfig = new NearCacheConfig();
nearCacheConfig.setInvalidateOnChange(true);
nearCacheConfig.setInMemoryFormat(InMemoryFormat.OBJECT);
cfg.getMapConfig(mapName).setNearCacheConfig(nearCacheConfig);
final MapConfig mapConfig = cfg.getMapConfig(mapName);
mapConfig.setTimeToLiveSeconds(ttl);
final TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(instanceCount);
final HazelcastInstance instance1 = factory.newHazelcastInstance(cfg);
final HazelcastInstance instance2 = factory.newHazelcastInstance(cfg);
final HazelcastInstance instance3 = factory.newHazelcastInstance(cfg);
final IMap map1 = instance1.getMap(mapName);
final IMap map2 = instance2.getMap(mapName);
final IMap map3 = instance3.getMap(mapName);
// observe eviction
final CountDownLatch latch = new CountDownLatch(size);
map1.addEntryListener(
new EntryAdapter() {
public void entryEvicted(EntryEvent event) {
latch.countDown();
}
},
false);
// populate map
for (int i = 0; i < size; i++) {
// populate.
map1.put(i, i);
// bring near caches. -- here is a time window
// that "i" already evicted. so a "get" brings
// a NULL object to the near cache.
map1.get(i);
map2.get(i);
map3.get(i);
}
// wait operations to complete
assertOpenEventually(latch);
// check map size after eviction.
assertEquals(0, map1.size());
assertEquals(0, map2.size());
assertEquals(0, map3.size());
// near cache sizes should be zero after eviction.
assertEquals(0, countNotNullValuesInNearCache(mapName, instance1));
assertEquals(0, countNotNullValuesInNearCache(mapName, instance2));
assertEquals(0, countNotNullValuesInNearCache(mapName, instance3));
}
