public static void main(String[] args) throws IOException {
MemcachedClientBuilder builder =
new XMemcachedClientBuilder(AddrUtil.getAddresses("localhost:11211"));
MemcachedClient memcachedClient = builder.build();
try {
memcachedClient.set("hello", 0, "Hello,xmemcached");
String value = memcachedClient.get("hello");
System.out.println("hello=" + value);
memcachedClient.delete("hello");
value = memcachedClient.get("hello");
System.out.println("hello=" + value);
} catch (MemcachedException e) {
System.err.println("MemcachedClient operation fail");
e.printStackTrace();
} catch (TimeoutException e) {
System.err.println("MemcachedClient operation timeout");
e.printStackTrace();
} catch (InterruptedException e) {
// ignore
}
try {
// close memcached client
memcachedClient.shutdown();
} catch (IOException e) {
System.err.println("Shutdown MemcachedClient fail");
e.printStackTrace();
}
}
public boolean delete(String key) {
try {
return memcachedClient.delete(key);
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
@Override
public void evict(Object key) {
try {
memcachedClient.delete(keyToString(key));
} catch (Exception e) {
log.warn("Unable to delete object from cache", throwableOrMessage(e));
}
}
@Override
public void logout(HttpServletRequest request, HttpServletResponse response, long uid) {
loginSessionManager.logout(request, response);
try {
memcachedClient.delete(MemcachedKeyGenerator.genUserOnlineKey(uid));
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}
public void testDelete() throws Exception {
assertTrue(memcachedClient.set("name", 0, "dennis"));
assertEquals("dennis", memcachedClient.get("name"));
assertTrue(memcachedClient.delete("name"));
assertNull(memcachedClient.get("name"));
assertFalse(memcachedClient.delete("not_exists"));
memcachedClient.set("name", 0, "dennis");
assertEquals("dennis", memcachedClient.get("name"));
assertTrue(memcachedClient.delete("name"));
assertNull(memcachedClient.get("name"));
memcachedClient.set("name", 0, "dennis");
assertEquals("dennis", memcachedClient.get("name"));
assertTrue(memcachedClient.delete("name", 2000L));
assertNull(memcachedClient.get("name"));
// add,replace success
assertTrue(memcachedClient.add("name", 0, "zhuang"));
assertTrue(memcachedClient.replace("name", 0, "zhuang"));
}
@Test
public void simpleTest() throws TimeoutException, InterruptedException, MemcachedException {
long start = System.currentTimeMillis();
String value = "simpleValue";
Assert.assertTrue(memcachedClient.set(key, 120, value));
Assert.assertEquals(value, memcachedClient.get(key));
// Assert.assertTrue(memcachedClient.touch(key, 120));
Assert.assertTrue(memcachedClient.delete(key));
Assert.assertNull(memcachedClient.get(key));
System.out.println("use time: " + (System.currentTimeMillis() - start));
}
public void testSanitizeKey() throws Exception {
memcachedClient.setSanitizeKeys(true);
String key = "The string 眉@foo-bar";
assertTrue(memcachedClient.add(key, 0, 0));
assertEquals(0, memcachedClient.get(key));
assertTrue(memcachedClient.replace(key, 0, 1));
assertEquals(1, memcachedClient.get(key, 2000));
assertTrue(memcachedClient.set(key, 0, 2));
assertEquals((Integer) 2, memcachedClient.get(key, 2000, new IntegerTranscoder()));
assertTrue(memcachedClient.set(key, 0, "xmemcached", new StringTranscoder()));
assertTrue(memcachedClient.append(key, " great"));
assertTrue(memcachedClient.prepend(key, "hello "));
assertEquals("hello xmemcached great", memcachedClient.get(key));
// test bulk get
List<String> keys = new ArrayList<String>();
for (int i = 0; i < 100; i++) {
memcachedClient.add(key + i, 0, i);
keys.add(key + i);
}
Map<String, Integer> result = memcachedClient.get(keys, 5000);
for (int i = 0; i < 100; i++) {
assertEquals((Integer) i, result.get(key + i));
}
for (int i = 0; i < 100; i++) {
assertTrue(memcachedClient.delete(key + i));
assertNull(memcachedClient.get(key + i));
}
// test cas
memcachedClient.set(key, 0, 1);
memcachedClient.cas(
key,
new CASOperation<Integer>() {
public int getMaxTries() {
return 1;
}
public Integer getNewValue(long currentCAS, Integer currentValue) {
return currentValue + 1;
}
});
assertEquals((Integer) 2, memcachedClient.get(key, 2000, new IntegerTranscoder()));
}
public void testDecr() throws Exception {
assertEquals(0, memcachedClient.decr("a", 5));
assertTrue(memcachedClient.set("a", 0, "100"));
assertEquals(50, memcachedClient.decr("a", 50));
assertEquals(46, memcachedClient.decr("a", 4));
// test decr with initValue
memcachedClient.delete("a");
assertEquals(100, memcachedClient.decr("a", 5, 100));
assertEquals(50, memcachedClient.decr("a", 50));
assertEquals(46, memcachedClient.decr("a", 4));
// test decr with initValue and expire time
memcachedClient.delete("a");
assertEquals(1, memcachedClient.decr("a", 5, 1, 1000, 1));
Thread.sleep(2000);
assertNull(memcachedClient.get("a"));
// blank key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.decr("", 0, 1);
}
}.check();
// null key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.decr((String) null, 0, 1);
}
}.check();
// invalid key
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.decr("test\r\n", 0, 1);
}
}.check();
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.decr("test test2", 0, 1);
}
}.check();
// key is too long
new TooLongKeyChecker(memcachedClient) {
@Override
public void call() throws Exception {
int keyLength = memcachedClient.getProtocol() == Protocol.Text ? 256 : 65536;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < keyLength; i++) {
sb.append(i);
}
memcachedClient.decr(sb.toString(), 0, 1);
}
}.check();
}
public void testAppendPrepend() throws Exception {
// append,prepend
assertTrue(memcachedClient.set("name", 0, "dennis", new StringTranscoder(), 1000));
assertTrue(memcachedClient.prepend("name", "hello "));
assertEquals("hello dennis", memcachedClient.get("name"));
assertTrue(memcachedClient.append("name", " zhuang"));
assertEquals("hello dennis zhuang", memcachedClient.get("name"));
memcachedClient.delete("name");
assertFalse(memcachedClient.prepend("name", "hello ", 2000));
assertFalse(memcachedClient.append("name", " zhuang", 2000));
// append test
// blank key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.append("", 0, 1);
}
}.check();
// null key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.append((String) null, 0, 1);
}
}.check();
// invalid key
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.append("test\r\n", 0, 1);
}
}.check();
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.append("test test2", 0, 1);
}
}.check();
// key is too long
new TooLongKeyChecker(memcachedClient) {
@Override
public void call() throws Exception {
int keyLength = memcachedClient.getProtocol() == Protocol.Text ? 256 : 65536;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < keyLength; i++) {
sb.append(i);
}
memcachedClient.append(sb.toString(), 0, 1);
}
}.check();
// prepend test
// blank key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.prepend("", 0, 1);
}
}.check();
// null key
new BlankKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.prepend((String) null, 0, 1);
}
}.check();
// invalid key
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.prepend("test\r\n", 0, 1);
}
}.check();
new InValidKeyChecker() {
@Override
public void call() throws Exception {
memcachedClient.prepend("test test2", 0, 1);
}
}.check();
// key is too long
new TooLongKeyChecker(memcachedClient) {
@Override
public void call() throws Exception {
int keyLength = memcachedClient.getProtocol() == Protocol.Text ? 256 : 65536;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < keyLength; i++) {
sb.append(i);
}
memcachedClient.prepend(sb.toString(), 0, 1);
}
}.check();
}
@After
public void tearDown() throws Exception {
memcachedClient.delete(key);
memcachedClient.shutdown();
}