RCache added. #195

src/main/java/org/redisson/Redisson.java

@@ -39,6 +39,7 @@ import org.redisson.core.RBatch;
 import org.redisson.core.RBitSet;
 import org.redisson.core.RBlockingQueue;
 import org.redisson.core.RBucket;
+import org.redisson.core.RCache;
 import org.redisson.core.RCountDownLatch;
 import org.redisson.core.RDeque;
 import org.redisson.core.RHyperLogLog;
@@ -188,6 +189,11 @@ public class Redisson implements RedissonClient {
         return new RedissonMap<K, V>(commandExecutor, name);
     }
 
+    @Override
+    public <K, V> RCache<K, V> getCache(String name) {
+        return new RedissonCache<K, V>(commandExecutor, name);
+    }
+
     @Override
     public <K, V> RMap<K, V> getMap(String name, Codec codec) {
         return new RedissonMap<K, V>(codec, commandExecutor, name);

src/main/java/org/redisson/RedissonCache.java

@@ -0,0 +1,354 @@
+/**
+ * Copyright 2014 Nikita Koksharov, Nickolay Borbit
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.redisson;
+
+import java.net.InetSocketAddress;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+
+import org.redisson.client.codec.Codec;
+import org.redisson.client.protocol.RedisCommand;
+import org.redisson.client.protocol.RedisCommand.ValueType;
+import org.redisson.client.protocol.RedisCommands;
+import org.redisson.client.protocol.convertor.BooleanReplayConvertor;
+import org.redisson.client.protocol.convertor.LongReplayConvertor;
+import org.redisson.client.protocol.decoder.MapScanResult;
+import org.redisson.client.protocol.decoder.ObjectListReplayDecoder;
+import org.redisson.client.protocol.decoder.ObjectMapReplayDecoder;
+import org.redisson.client.protocol.decoder.ObjectSetReplayDecoder;
+import org.redisson.command.CommandAsyncExecutor;
+import org.redisson.connection.decoder.MapGetAllDecoder;
+import org.redisson.core.RCache;
+
+import io.netty.util.concurrent.Future;
+
+/**
+ * Distributed and concurrent implementation of {@link java.util.concurrent.ConcurrentMap}
+ * and {@link java.util.Map}
+ *
+ * @author Nikita Koksharov
+ *
+ * @param <K> key
+ * @param <V> value
+ */
+// TODO override expire methods
+public class RedissonCache<K, V> extends RedissonMap<K, V> implements RCache<K, V> {
+
+    private static final RedisCommand<Object> EVAL_REMOVE = new RedisCommand<Object>("EVAL", 4, ValueType.MAP_KEY, ValueType.MAP_VALUE);
+    private static final RedisCommand<Object> EVAL_REPLACE = new RedisCommand<Object>("EVAL", 4, ValueType.MAP, ValueType.MAP_VALUE);
+    private static final RedisCommand<Long> EVAL_REMOVE_VALUE = new RedisCommand<Long>("EVAL", new LongReplayConvertor(), 5, ValueType.MAP);
+    private static final RedisCommand<Object> EVAL_PUT = EVAL_REPLACE;
+    private static final RedisCommand<Object> EVAL_PUT_TTL = new RedisCommand<Object>("EVAL", 6, ValueType.MAP, ValueType.MAP_VALUE);
+    private static final RedisCommand<Object> EVAL_GET_TTL = new RedisCommand<Object>("EVAL", 6, ValueType.MAP_KEY, ValueType.MAP_VALUE);
+
+    private static final RedisCommand<Boolean> EVAL_CONTAINS = new RedisCommand<Boolean>("EVAL", new BooleanReplayConvertor(), 6);
+    private static final RedisCommand<Set<Object>> EVAL_HKEYS = new RedisCommand<Set<Object>>("EVAL", new ObjectSetReplayDecoder(), ValueType.MAP_KEY);
+    private static final RedisCommand<List<Object>> EVAL_HVALS = new RedisCommand<List<Object>>("EVAL", new ObjectListReplayDecoder<Object>(), ValueType.MAP_VALUE);
+    private static final RedisCommand<Map<Object, Object>> EVAL_HGETALL = new RedisCommand<Map<Object, Object>>("EVAL", new ObjectMapReplayDecoder(), ValueType.MAP);
+    private static final RedisCommand<Long> EVAL_FAST_REMOVE = new RedisCommand<Long>("EVAL", 2);
+
+    protected RedissonCache(CommandAsyncExecutor commandExecutor, String name) {
+        super(commandExecutor, name);
+    }
+
+    public RedissonCache(Codec codec, CommandAsyncExecutor commandExecutor, String name) {
+        super(codec, commandExecutor, name);
+    }
+
+    @Override
+    public Future<Integer> sizeAsync() {
+        return commandExecutor.evalWriteAsync(getName(), codec, RedisCommands.EVAL_INTEGER,
+                "local expiredKeys = redis.call('zrangebyscore', KEYS[2], 0, ARGV[1]); "
+                + "if table.getn(expiredKeys) > 0 then "
+                    + "expiredKeys = unpack(expiredKeys); "
+                    + "redis.call('zrem', KEYS[2], expiredKeys); "
+                    + "redis.call('hdel', KEYS[1], expiredKeys); "
+                + "end; "
+                + "return redis.call('hlen', KEYS[1]);",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis());
+    }
+
+    @Override
+    public Future<Boolean> containsKeyAsync(Object key) {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_CONTAINS,
+                "local v = redis.call('hexists', KEYS[1], ARGV[2]); "
+                + "if v == 1 then "
+                    + "local expireDate = redis.call('zscore', KEYS[2], ARGV[2]); "
+                    + "if expireDate ~= false and expireDate <= ARGV[1] then "
+                        + "redis.call('zrem', KEYS[2], ARGV[2]); "
+                        + "redis.call('hdel', KEYS[1], ARGV[2]); "
+                        + "return false;"
+                    + "end;"
+                + "return true;"
+                + "end;"
+                + "return false;",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis(), key);
+    }
+
+    @Override
+    public Future<Boolean> containsValueAsync(Object value) {
+        return commandExecutor.evalWriteAsync(getName(), codec, new RedisCommand<Boolean>("EVAL", new BooleanReplayConvertor(), 6),
+                "local s = redis.call('hgetall', KEYS[1]);" +
+                        "for i, v in ipairs(s) do "
+                            + "if ARGV[2] == v and i % 2 == 0 then "
+                                + "local key = s[i-1];"
+                                + "local expireDate = redis.call('zscore', KEYS[2], key); "
+                                + "if expireDate ~= false and expireDate <= ARGV[1] then "
+                                    + "redis.call('zrem', KEYS[2], key); "
+                                    + "redis.call('hdel', KEYS[1], key); "
+                                    + "return false;"
+                                + "end;"
+                                + "return true "
+                            + "end "
+                       + "end;" +
+                     "return false",
+                 Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis(), value);
+    }
+
+    @Override
+    public Future<Map<K, V>> getAllAsync(Set<K> keys) {
+        if (keys.isEmpty()) {
+            return newSucceededFuture(Collections.<K, V>emptyMap());
+        }
+
+        List<Object> args = new ArrayList<Object>(keys.size() + 2);
+        args.add(System.currentTimeMillis());
+        args.addAll(keys);
+        return commandExecutor.evalWriteAsync(getName(), codec, new RedisCommand<Map<Object, Object>>("EVAL", new MapGetAllDecoder(args), 6, ValueType.MAP_KEY, ValueType.MAP_VALUE),
+                "local maxDate = table.remove(ARGV, 1); " + // index is the first parameter
+                        "for i, key in ipairs(ARGV) do "
+                        + "local expireDate = redis.call('zscore', KEYS[2], key); "
+                        + "if expireDate ~= false and expireDate <= maxDate then "
+                        + "print ('delete ' .. key)"
+                            + "redis.call('zrem', KEYS[2], key); "
+                            + "redis.call('hdel', KEYS[1], key); "
+                        + "end;"
+                       + "end;" +
+                       "return redis.call('hmget', KEYS[1], unpack(ARGV));",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), args.toArray());
+    }
+
+    @Override
+    public Future<Set<K>> keySetAsync() {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_HKEYS,
+                "local expiredKeys = redis.call('zrangebyscore', KEYS[2], 0, ARGV[1]); "
+                + "if table.getn(expiredKeys) > 0 then "
+                    + "expiredKeys = unpack(expiredKeys); "
+                    + "redis.call('zrem', KEYS[2], expiredKeys); "
+                    + "redis.call('hdel', KEYS[1], expiredKeys); "
+                + "end; "
+                + "return redis.call('hkeys', KEYS[1]);",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis());
+    }
+
+    @Override
+    public Future<Collection<V>> valuesAsync() {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_HVALS,
+                "local expiredKeys = redis.call('zrangebyscore', KEYS[2], 0, ARGV[1]); "
+                + "if table.getn(expiredKeys) > 0 then "
+                    + "expiredKeys = unpack(expiredKeys); "
+                    + "redis.call('zrem', KEYS[2], expiredKeys); "
+                    + "redis.call('hdel', KEYS[1], expiredKeys); "
+                + "end; "
+                + "return redis.call('hvals', KEYS[1]);",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis());
+    }
+
+    @Override
+    public Set<java.util.Map.Entry<K, V>> entrySet() {
+        Future<Map<K, V>> f = commandExecutor.evalWriteAsync(getName(), codec, EVAL_HGETALL,
+                "local expiredKeys = redis.call('zrangebyscore', KEYS[2], 0, ARGV[1]); "
+                + "if table.getn(expiredKeys) > 0 then "
+                    + "expiredKeys = unpack(expiredKeys); "
+                    + "redis.call('zrem', KEYS[2], expiredKeys); "
+                    + "redis.call('hdel', KEYS[1], expiredKeys); "
+                + "end; "
+                + "return redis.call('hgetall', KEYS[1]);",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis());
+
+        Map<K, V> map = get(f);
+        return map.entrySet();
+    }
+
+    public V putIfAbsent(K key, V value, long ttl, TimeUnit unit) {
+        return get(putIfAbsent(key, value, ttl, unit));
+    }
+
+    public Future<V> putIfAbsentAsync(K key, V value, long ttl, TimeUnit unit) {
+        long timeoutDate = System.currentTimeMillis() + unit.toMillis(ttl);
+
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_PUT,
+                "if redis.call('hexists', KEYS[1], ARGV[1]) == 0 then "
+                    + "redis.call('zadd', KEYS[2], ARGV[1], ARGV[2]); "
+                    + "redis.call('hset', KEYS[1], ARGV[1], ARGV[2]); "
+                    + "return nil "
+                + "else "
+                    + "return redis.call('hget', KEYS[1], ARGV[1]) "
+                + "end",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), timeoutDate, key, value);
+    }
+
+    @Override
+    public Future<Long> removeAsync(Object key, Object value) {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_REMOVE_VALUE,
+                "if redis.call('hget', KEYS[1], ARGV[1]) == ARGV[2] then "
+                        + "redis.call('zrem', KEYS[2], ARGV[1]); "
+                        + "return redis.call('hdel', KEYS[1], ARGV[1]); "
+                + "else "
+                    + "return 0 "
+                + "end",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), key, value);
+    }
+
+    public Future<V> getAsync(K key) {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_GET_TTL,
+                "local v = redis.call('hget', KEYS[1], ARGV[2]); "
+                + "local expireDate = redis.call('zscore', KEYS[2], ARGV[2]); "
+                + "if expireDate ~= false and expireDate <= ARGV[1] then "
+                    + "redis.call('zrem', KEYS[2], ARGV[2]); "
+                    + "redis.call('hdel', KEYS[1], ARGV[2]); "
+                    + "return nil;"
+                + "end;"
+                + "return v;",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), System.currentTimeMillis(), key);
+    }
+
+    public V put(K key, V value, long ttl, TimeUnit unit) {
+        return get(putAsync(key, value, ttl, unit));
+    }
+
+    public Future<V> putAsync(K key, V value, long ttl, TimeUnit unit) {
+        long timeoutDate = System.currentTimeMillis() + unit.toMillis(ttl);
+
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_PUT_TTL,
+                "local v = redis.call('hget', KEYS[1], ARGV[2]); "
+                + "redis.call('zadd', KEYS[2], ARGV[1], ARGV[2]); "
+                + "redis.call('hset', KEYS[1], ARGV[2], ARGV[3]); "
+                + "return v",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), timeoutDate, key, value);
+    }
+
+    String getTimeoutSetName() {
+        return "redisson__timeout__set__{" + getName() + "}";
+    }
+
+
+    @Override
+    public Future<V> removeAsync(K key) {
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_REMOVE,
+                "local v = redis.call('hget', KEYS[1], ARGV[1]); "
+                + "redis.call('zrem', KEYS[2], ARGV[1]); "
+                + "redis.call('hdel', KEYS[1], ARGV[1]); "
+                + "return v",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), key);
+    }
+
+    @Override
+    public Future<Long> fastRemoveAsync(K ... keys) {
+        if (keys == null || keys.length == 0) {
+            return newSucceededFuture(0L);
+        }
+
+        List<Object> args = new ArrayList<Object>(keys.length);
+        args.addAll(Arrays.asList(keys));
+        return commandExecutor.evalWriteAsync(getName(), codec, EVAL_FAST_REMOVE,
+                "redis.call('zrem', KEYS[2], unpack(ARGV)); "
+                + "return redis.call('hdel', KEYS[1], unpack(ARGV)); ",
+                Arrays.<Object>asList(getName(), getTimeoutSetName()), args.toArray());
+    }
+
+    MapScanResult<Object, V> scanIterator(InetSocketAddress client, long startPos) {
+        Future<MapScanResult<Object, V>> f = commandExecutor.readAsync(client, getName(), codec, RedisCommands.HSCAN, getName(), startPos);
+        return get(f);
+    }
+
+//    @Override
+//    public Iterator<Map.Entry<K, V>> entryIterator() {
+//        return new RedissonMapIterator<K, V, Map.Entry<K, V>>(this);
+//    }
+//
+//    @Override
+//    public Iterator<V> valueIterator() {
+//        return new RedissonMapIterator<K, V, V>(this) {
+//            @Override
+//            V getValue(java.util.Map.Entry<K, V> entry) {
+//                return entry.getValue();
+//            }
+//        };
+//    }
+//
+//    @Override
+//    public Iterator<K> keyIterator() {
+//        return new RedissonMapIterator<K, V, K>(this) {
+//            @Override
+//            K getValue(java.util.Map.Entry<K, V> entry) {
+//                return entry.getKey();
+//            }
+//        };
+//    }
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this)
+            return true;
+
+        if (!(o instanceof Map))
+            return false;
+        Map<?,?> m = (Map<?,?>) o;
+        if (m.size() != size())
+            return false;
+
+        try {
+            Iterator<Entry<K,V>> i = entrySet().iterator();
+            while (i.hasNext()) {
+                Entry<K,V> e = i.next();
+                K key = e.getKey();
+                V value = e.getValue();
+                if (value == null) {
+                    if (!(m.get(key)==null && m.containsKey(key)))
+                        return false;
+                } else {
+                    if (!value.equals(m.get(key)))
+                        return false;
+                }
+            }
+        } catch (ClassCastException unused) {
+            return false;
+        } catch (NullPointerException unused) {
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        int h = 0;
+        Iterator<Entry<K,V>> i = entrySet().iterator();
+        while (i.hasNext())
+            h += i.next().hashCode();
+        return h;
+    }
+
+}

src/main/java/org/redisson/RedissonClient.java

@@ -26,6 +26,7 @@ import org.redisson.core.RBatch;
 import org.redisson.core.RBitSet;
 import org.redisson.core.RBlockingQueue;
 import org.redisson.core.RBucket;
+import org.redisson.core.RCache;
 import org.redisson.core.RCountDownLatch;
 import org.redisson.core.RDeque;
 import org.redisson.core.RHyperLogLog;
@@ -51,6 +52,8 @@ import org.redisson.core.RTopic;
  */
 public interface RedissonClient {
 
+    <K, V> RCache<K, V> getCache(String name);
+
     /**
      * Returns object holder instance by name.
      *

src/main/java/org/redisson/client/protocol/RedisCommand.java

@@ -87,41 +87,41 @@ public class RedisCommand<R> {
         this(name, subName, null, null, objectParamIndex);
     }
 
-    public RedisCommand(String name, int encodeParamIndex) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, int inParamIndex) {
+        this(name, null, null, null, inParamIndex);
     }
 
-    public RedisCommand(String name, int encodeParamIndex, ValueType inParamType, ValueType outParamType) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, int inParamIndex, ValueType inParamType, ValueType outParamType) {
+        this(name, null, null, null, inParamIndex);
         this.inParamType = Arrays.asList(inParamType);
         this.outParamType = outParamType;
     }
 
-    public RedisCommand(String name, int encodeParamIndex, List<ValueType> inParamType, ValueType outParamType) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, int inParamIndex, List<ValueType> inParamType, ValueType outParamType) {
+        this(name, null, null, null, inParamIndex);
         this.inParamType = inParamType;
         this.outParamType = outParamType;
     }
 
-    public RedisCommand(String name, Decoder<R> reponseDecoder, int encodeParamIndex, List<ValueType> inParamType, ValueType outParamType) {
-        this(name, null, null, reponseDecoder, encodeParamIndex);
+    public RedisCommand(String name, Decoder<R> reponseDecoder, int inParamIndex, List<ValueType> inParamType, ValueType outParamType) {
+        this(name, null, null, reponseDecoder, inParamIndex);
         this.inParamType = inParamType;
         this.outParamType = outParamType;
     }
 
-    public RedisCommand(String name, Decoder<R> reponseDecoder, int encodeParamIndex, List<ValueType> inParamType) {
-        this(name, null, null, reponseDecoder, encodeParamIndex);
+    public RedisCommand(String name, Decoder<R> reponseDecoder, int inParamIndex, List<ValueType> inParamType) {
+        this(name, null, null, reponseDecoder, inParamIndex);
         this.inParamType = inParamType;
     }
 
-    public RedisCommand(String name, Convertor<R> convertor, int encodeParamIndex, ValueType inParamType) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, Convertor<R> convertor, int inParamIndex, ValueType inParamType) {
+        this(name, null, null, null, inParamIndex);
         this.convertor = convertor;
         this.inParamType = Arrays.asList(inParamType);
     }
 
-    public RedisCommand(String name, Convertor<R> convertor, int encodeParamIndex, List<ValueType> inParamTypes) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, Convertor<R> convertor, int inParamIndex, List<ValueType> inParamTypes) {
+        this(name, null, null, null, inParamIndex);
         this.convertor = convertor;
         this.inParamType = inParamTypes;
     }
@@ -130,8 +130,8 @@ public class RedisCommand<R> {
         this(name, convertor, -1);
     }
 
-    public RedisCommand(String name, Convertor<R> convertor, int encodeParamIndex) {
-        this(name, null, null, null, encodeParamIndex);
+    public RedisCommand(String name, Convertor<R> convertor, int inParamIndex) {
+        this(name, null, null, null, inParamIndex);
         this.convertor = convertor;
     }
 
@@ -183,13 +183,13 @@ public class RedisCommand<R> {
         this(name, subName, replayMultiDecoder, null, objectParamIndex);
     }
 
-    public RedisCommand(String name, String subName, MultiDecoder<R> replayMultiDecoder, Decoder<R> reponseDecoder, int objectParamIndex) {
+    public RedisCommand(String name, String subName, MultiDecoder<R> replayMultiDecoder, Decoder<R> reponseDecoder, int inParamIndex) {
         super();
         this.name = name;
         this.subName = subName;
         this.replayMultiDecoder = replayMultiDecoder;
         this.replayDecoder = reponseDecoder;
-        this.inParamIndex = objectParamIndex;
+        this.inParamIndex = inParamIndex;
     }
 
     public String getSubName() {

src/main/java/org/redisson/core/RCache.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright 2014 Nikita Koksharov, Nickolay Borbit
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.redisson.core;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Distributed and concurrent implementation of {@link java.util.concurrent.ConcurrentMap}
+ * and {@link java.util.Map}
+ *
+ * @author Nikita Koksharov
+ *
+ * @param <K> key
+ * @param <V> value
+ */
+public interface RCache<K, V> extends RMap<K, V>, RCacheAsync<K, V> {
+
+    V putIfAbsent(K key, V value, long ttl, TimeUnit unit);
+
+    V put(K key, V value, long ttl, TimeUnit unit);
+
+}

src/main/java/org/redisson/core/RCacheAsync.java

@@ -0,0 +1,36 @@
+/**
+ * Copyright 2014 Nikita Koksharov, Nickolay Borbit
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.redisson.core;
+
+import java.util.concurrent.TimeUnit;
+
+import io.netty.util.concurrent.Future;
+
+/**
+ * Async map functions
+ *
+ * @author Nikita Koksharov
+ *
+ * @param <K> key
+ * @param <V> value
+ */
+public interface RCacheAsync<K, V> extends RMapAsync<K, V> {
+
+    Future<V> putIfAbsentAsync(K key, V value, long ttl, TimeUnit unit);
+
+    Future<V> putAsync(K key, V value, long ttl, TimeUnit unit);
+
+}