Add support for flush modes using FLUSHDB and FLUSHALL commands.

Closes #2187
Original pull request: #2190.

src/main/java/org/springframework/data/redis/connection/DefaultStringRedisConnection.java

@@ -75,6 +75,7 @@ import org.springframework.util.ObjectUtils;
  * @author Andrey Shlykov
  * @author dengliming
  * @author ihaohong
+ * @author Dennis Neufeld
  */
 public class DefaultStringRedisConnection implements StringRedisConnection, DecoratedRedisConnection {
 
@@ -313,11 +314,21 @@ public class DefaultStringRedisConnection implements StringRedisConnection, Deco
 		delegate.flushAll();
 	}
 
+	@Override
+	public void flushAll(FlushOption option) {
+		delegate.flushAll(option);
+	}
+
 	@Override
 	public void flushDb() {
 		delegate.flushDb();
 	}
 
+	@Override
+	public void flushDb(FlushOption option) {
+		delegate.flushDb(option);
+	}
+
 	@Override
 	public byte[] get(byte[] key) {
 		return convertAndReturn(delegate.get(key), Converters.identityConverter());

src/main/java/org/springframework/data/redis/connection/DefaultedRedisClusterConnection.java

@@ -27,6 +27,7 @@ import org.springframework.util.Assert;
 /**
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 public interface DefaultedRedisClusterConnection extends RedisClusterConnection, DefaultedRedisConnection {
@@ -73,6 +74,13 @@ public interface DefaultedRedisClusterConnection extends RedisClusterConnection,
 		serverCommands().flushDb(node);
 	}
 
+	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
+	@Override
+	@Deprecated
+	default void flushDb(RedisClusterNode node, FlushOption option) {
+		serverCommands().flushDb(node, option);
+	}
+
 	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
 	@Override
 	@Deprecated
@@ -80,6 +88,13 @@ public interface DefaultedRedisClusterConnection extends RedisClusterConnection,
 		serverCommands().flushAll(node);
 	}
 
+	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
+	@Override
+	@Deprecated
+	default void flushAll(RedisClusterNode node, FlushOption option) {
+		serverCommands().flushAll(node, option);
+	}
+
 	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
 	@Override
 	@Deprecated

src/main/java/org/springframework/data/redis/connection/DefaultedRedisConnection.java

@@ -60,6 +60,7 @@ import org.springframework.lang.Nullable;
  * @author Andrey Shlykov
  * @author dengliming
  * @author ihaohong
+ * @author Dennis Neufeld
  * @since 2.0
  */
 public interface DefaultedRedisConnection extends RedisConnection {
@@ -1632,6 +1633,13 @@ public interface DefaultedRedisConnection extends RedisConnection {
 		serverCommands().flushDb();
 	}
 
+	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
+	@Override
+	@Deprecated
+	default void flushDb(FlushOption option) {
+		serverCommands().flushDb(option);
+	}
+
 	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
 	@Override
 	@Deprecated
@@ -1639,6 +1647,13 @@ public interface DefaultedRedisConnection extends RedisConnection {
 		serverCommands().flushAll();
 	}
 
+	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
+	@Override
+	@Deprecated
+	default void flushAll(FlushOption option) {
+		serverCommands().flushAll(option);
+	}
+
 	/** @deprecated in favor of {@link RedisConnection#serverCommands()}. */
 	@Override
 	@Deprecated

src/main/java/org/springframework/data/redis/connection/ReactiveClusterServerCommands.java

@@ -20,6 +20,7 @@ import reactor.core.publisher.Mono;
 
 import java.util.Properties;
 
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 import org.springframework.data.redis.core.types.RedisClientInfo;
 
 /**
@@ -27,6 +28,7 @@ import org.springframework.data.redis.core.types.RedisClientInfo;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Dennis Neufeld
  * @since 2.0
  */
 public interface ReactiveClusterServerCommands extends ReactiveServerCommands {
@@ -91,6 +93,17 @@ public interface ReactiveClusterServerCommands extends ReactiveServerCommands {
 	 */
 	Mono<String> flushDb(RedisClusterNode node);
 
+	/**
+	 * Delete all keys of the currently selected database using the specified flush option.
+	 *
+	 * @param node must not be {@literal null}. {@link Mono} indicating command completion.
+	 * @param option
+	 * @throws IllegalArgumentException when {@code node} is {@literal null}.
+	 * @see RedisServerCommands#flushDb(FlushOption)
+	 * @since 2.6
+	 */
+	Mono<String> flushDb(RedisClusterNode node, FlushOption option);
+
 	/**
 	 * Delete all <b>all keys</b> from <b>all databases</b>.
 	 *
@@ -101,6 +114,18 @@ public interface ReactiveClusterServerCommands extends ReactiveServerCommands {
 	 */
 	Mono<String> flushAll(RedisClusterNode node);
 
+	/**
+	 * Delete all <b>all keys</b> from <b>all databases</b> using the specified flush option.
+	 *
+	 * @param node must not be {@literal null}.
+	 * @param option
+	 * @return {@link Mono} indicating command completion.
+	 * @throws IllegalArgumentException when {@code node} is {@literal null}.
+	 * @see RedisServerCommands#flushAll(FlushOption)
+	 * @since 2.6
+	 */
+	Mono<String> flushAll(RedisClusterNode node, FlushOption option);
+
 	/**
 	 * Load {@literal default} server information like
 	 * <ul>

src/main/java/org/springframework/data/redis/connection/ReactiveServerCommands.java

@@ -21,6 +21,7 @@ import reactor.core.publisher.Mono;
 import java.util.Properties;
 import java.util.concurrent.TimeUnit;
 
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 import org.springframework.data.redis.core.types.RedisClientInfo;
 
 /**
@@ -28,6 +29,7 @@ import org.springframework.data.redis.core.types.RedisClientInfo;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Dennis Neufeld
  * @since 2.0
  */
 public interface ReactiveServerCommands {
@@ -81,6 +83,16 @@ public interface ReactiveServerCommands {
 	 */
 	Mono<String> flushDb();
 
+	/**
+	 * Delete all keys of the currently selected database using the specified flush option.
+	 *
+	 * @param option
+	 * @return {@link Mono} indicating command completion.
+	 * @see <a href="https://redis.io/commands/flushdb">Redis Documentation: FLUSHDB</a>
+	 * @since 2.6
+	 */
+	Mono<String> flushDb(FlushOption option);
+
 	/**
 	 * Delete all <b>all keys</b> from <b>all databases</b>.
 	 *
@@ -89,6 +101,16 @@ public interface ReactiveServerCommands {
 	 */
 	Mono<String> flushAll();
 
+	/**
+	 * Delete all <b>all keys</b> from <b>all databases</b> using the specified flush option.
+	 *
+	 * @param option
+	 * @return {@link Mono} indicating command completion.
+	 * @see <a href="https://redis.io/commands/flushall">Redis Documentation: FLUSHALL</a>
+	 * @since 2.6
+	 */
+	Mono<String> flushAll(FlushOption option);
+
 	/**
 	 * Load {@literal default} server information like
 	 * <ul>

src/main/java/org/springframework/data/redis/connection/RedisClusterServerCommands.java

@@ -23,6 +23,7 @@ import org.springframework.data.redis.core.types.RedisClientInfo;
 
 /**
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 public interface RedisClusterServerCommands extends RedisServerCommands {
@@ -65,12 +66,28 @@ public interface RedisClusterServerCommands extends RedisServerCommands {
 	 */
 	void flushDb(RedisClusterNode node);
 
+	/**
+	 * @param node must not be {@literal null}.
+	 * @param option
+	 * @see RedisServerCommands#flushDb(FlushOption)
+	 * @since 2.6
+	 */
+	void flushDb(RedisClusterNode node, FlushOption option);
+
 	/**
 	 * @param node must not be {@literal null}.
 	 * @see RedisServerCommands#flushAll()
 	 */
 	void flushAll(RedisClusterNode node);
 
+	/**
+	 * @param node must not be {@literal null}.
+	 * @param option
+	 * @see RedisServerCommands#flushAll(FlushOption)
+	 * @since 2.6
+	 */
+	void flushAll(RedisClusterNode node, FlushOption option);
+
 	/**
 	 * @param node must not be {@literal null}.
 	 * @return

src/main/java/org/springframework/data/redis/connection/RedisServerCommands.java

@@ -29,6 +29,7 @@ import org.springframework.lang.Nullable;
  * @author Christoph Strobl
  * @author Thomas Darimont
  * @author Mark Paluch
+ * @author Dennis Neufeld
  */
 public interface RedisServerCommands {
 
@@ -43,6 +44,13 @@ public interface RedisServerCommands {
 		COPY, REPLACE
 	}
 
+	/**
+	 * @since 2.6
+	 */
+	enum FlushOption {
+		SYNC, ASYNC
+	}
+
 	/**
 	 * Start an {@literal Append Only File} rewrite process on server.
 	 *
@@ -101,6 +109,15 @@ public interface RedisServerCommands {
 	 */
 	void flushDb();
 
+	/**
+	 * Delete all keys of the currently selected database using the specified flush option.
+	 *
+	 * @param option
+	 * @see <a href="https://redis.io/commands/flushdb">Redis Documentation: FLUSHDB</a>
+	 * @since 2.6
+	 */
+	void flushDb(FlushOption option);
+
 	/**
 	 * Delete all <b>all keys</b> from <b>all databases</b>.
 	 *
@@ -108,6 +125,15 @@ public interface RedisServerCommands {
 	 */
 	void flushAll();
 
+	/**
+	 * Delete all <b>all keys</b> from <b>all databases</b> using the specified flush option.
+	 *
+	 * @param option
+	 * @see <a href="https://redis.io/commands/flushall">Redis Documentation: FLUSHALL</a>
+	 * @since 2.6
+	 */
+	void flushAll(FlushOption option);
+
 	/**
 	 * Load {@literal default} server information like
 	 * <ul>

src/main/java/org/springframework/data/redis/connection/jedis/JedisClusterServerCommands.java

@@ -17,6 +17,7 @@ package org.springframework.data.redis.connection.jedis;
 
 import redis.clients.jedis.BinaryJedis;
 import redis.clients.jedis.Jedis;
+import redis.clients.jedis.args.FlushMode;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -41,6 +42,7 @@ import org.springframework.util.CollectionUtils;
 
 /**
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 class JedisClusterServerCommands implements RedisClusterServerCommands {
@@ -127,22 +129,43 @@ class JedisClusterServerCommands implements RedisClusterServerCommands {
 		executeCommandOnAllNodes(BinaryJedis::flushDB);
 	}
 
+	@Override
+	public void flushDb(FlushOption option) {
+		executeCommandOnAllNodes(it -> it.flushDB(toFlushMode(option)));
+	}
+
 	@Override
 	public void flushDb(RedisClusterNode node) {
 		executeCommandOnSingleNode(BinaryJedis::flushDB, node);
 	}
 
+	@Override
+	public void flushDb(RedisClusterNode node, FlushOption option) {
+		executeCommandOnSingleNode(it -> it.flushDB(toFlushMode(option)), node);
+	}
+
 	@Override
 	public void flushAll() {
 		connection.getClusterCommandExecutor()
 				.executeCommandOnAllNodes((JedisClusterCommandCallback<String>) BinaryJedis::flushAll);
 	}
 
+	@Override
+	public void flushAll(FlushOption option) {
+		connection.getClusterCommandExecutor()
+				.executeCommandOnAllNodes((JedisClusterCommandCallback<String>) it -> it.flushAll(toFlushMode(option)));
+	}
+
 	@Override
 	public void flushAll(RedisClusterNode node) {
 		executeCommandOnSingleNode(BinaryJedis::flushAll, node);
 	}
 
+	@Override
+	public void flushAll(RedisClusterNode node, FlushOption option) {
+		executeCommandOnSingleNode(it -> it.flushAll(toFlushMode(option)), node);
+	}
+
 	@Override
 	public Properties info() {
 
@@ -395,4 +418,19 @@ class JedisClusterServerCommands implements RedisClusterServerCommands {
 	private <T> MultiNodeResult<T> executeCommandOnAllNodes(JedisClusterCommandCallback<T> cmd) {
 		return connection.getClusterCommandExecutor().executeCommandOnAllNodes(cmd);
 	}
+
+	static FlushMode toFlushMode(@Nullable FlushOption option) {
+
+		if (option == null) {
+			return FlushMode.SYNC;
+		}
+
+		switch (option) {
+			case ASYNC:
+				return FlushMode.ASYNC;
+			case SYNC:
+				return FlushMode.SYNC;
+		}
+		throw new UnsupportedOperationException("Flush option " + option + " is not implemented.");
+	}
 }

src/main/java/org/springframework/data/redis/connection/jedis/JedisServerCommands.java

@@ -18,6 +18,7 @@ package org.springframework.data.redis.connection.jedis;
 import redis.clients.jedis.BinaryJedis;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.MultiKeyPipelineBase;
+import redis.clients.jedis.args.FlushMode;
 import redis.clients.jedis.args.SaveMode;
 
 import java.util.List;
@@ -33,6 +34,7 @@ import org.springframework.util.Assert;
 
 /**
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 class JedisServerCommands implements RedisServerCommands {
@@ -75,11 +77,25 @@ class JedisServerCommands implements RedisServerCommands {
 		connection.invokeStatus().just(BinaryJedis::flushDB, MultiKeyPipelineBase::flushDB);
 	}
 
+	@Override
+	public void flushDb(FlushOption option) {
+
+		FlushMode flushMode = JedisClusterServerCommands.toFlushMode(option);
+		connection.invokeStatus().just(it -> it.flushDB(flushMode), it -> it.flushDB(flushMode));
+	}
+
 	@Override
 	public void flushAll() {
 		connection.invokeStatus().just(BinaryJedis::flushAll, MultiKeyPipelineBase::flushAll);
 	}
 
+	@Override
+	public void flushAll(FlushOption option) {
+
+		FlushMode flushMode = JedisClusterServerCommands.toFlushMode(option);
+		connection.invokeStatus().just(it -> it.flushAll(flushMode), it -> it.flushAll(flushMode));
+	}
+
 	@Override
 	public Properties info() {
 		return connection.invoke().from(BinaryJedis::info, MultiKeyPipelineBase::info).get(JedisConverters::toProperties);

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceClusterServerCommands.java

@@ -38,6 +38,7 @@ import org.springframework.util.CollectionUtils;
 
 /**
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 class LettuceClusterServerCommands extends LettuceServerCommands implements RedisClusterServerCommands {
@@ -96,21 +97,41 @@ class LettuceClusterServerCommands extends LettuceServerCommands implements Redi
 		executeCommandOnAllNodes(RedisServerCommands::flushdb);
 	}
 
+	@Override
+	public void flushDb(FlushOption option) {
+		executeCommandOnAllNodes(it -> it.flushdb(toFlushMode(option)));
+	}
+
 	@Override
 	public void flushDb(RedisClusterNode node) {
 		executeCommandOnSingleNode(RedisServerCommands::flushdb, node);
 	}
 
+	@Override
+	public void flushDb(RedisClusterNode node, FlushOption option) {
+		executeCommandOnSingleNode(it -> it.flushdb(toFlushMode(option)), node);
+	}
+
 	@Override
 	public void flushAll() {
 		executeCommandOnAllNodes(RedisServerCommands::flushall);
 	}
 
+	@Override
+	public void flushAll(FlushOption option) {
+		executeCommandOnAllNodes(it -> it.flushall(toFlushMode(option)));
+	}
+
 	@Override
 	public void flushAll(RedisClusterNode node) {
 		executeCommandOnSingleNode(RedisServerCommands::flushall, node);
 	}
 
+	@Override
+	public void flushAll(RedisClusterNode node, FlushOption option) {
+		executeCommandOnSingleNode(it -> it.flushall(toFlushMode(option)), node);
+	}
+
 	@Override
 	public Properties info(RedisClusterNode node) {
 		return LettuceConverters.toProperties(executeCommandOnSingleNode(RedisServerCommands::info, node).getValue());

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceReactiveClusterServerCommands.java

@@ -41,6 +41,7 @@ import org.reactivestreams.Publisher;
 import org.springframework.data.redis.connection.ClusterTopologyProvider;
 import org.springframework.data.redis.connection.ReactiveClusterServerCommands;
 import org.springframework.data.redis.connection.RedisClusterNode;
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 import org.springframework.data.redis.core.types.RedisClientInfo;
 import org.springframework.data.redis.util.ByteUtils;
 import org.springframework.util.Assert;
@@ -50,6 +51,7 @@ import org.springframework.util.Assert;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Dennis Neufeld
  * @since 2.0
  */
 class LettuceReactiveClusterServerCommands extends LettuceReactiveServerCommands
@@ -105,11 +107,21 @@ class LettuceReactiveClusterServerCommands extends LettuceReactiveServerCommands
 		return connection.execute(node, RedisServerReactiveCommands::flushdb).next();
 	}
 
+	@Override
+	public Mono<String> flushDb(RedisClusterNode node, FlushOption option) {
+		return connection.execute(node, it -> it.flushdb(LettuceServerCommands.toFlushMode(option))).next();
+	}
+
 	@Override
 	public Mono<String> flushAll(RedisClusterNode node) {
 		return connection.execute(node, RedisServerReactiveCommands::flushall).next();
 	}
 
+	@Override
+	public Mono<String> flushAll(RedisClusterNode node, FlushOption option) {
+		return connection.execute(node, it -> it.flushall(LettuceServerCommands.toFlushMode(option))).next();
+	}
+
 	@Override
 	public Mono<Properties> info() {
 		return Flux.merge(executeOnAllNodes(this::info)).collect(PropertiesCollector.INSTANCE);

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceReactiveServerCommands.java

@@ -25,6 +25,7 @@ import java.util.Properties;
 import java.util.concurrent.TimeUnit;
 
 import org.springframework.data.redis.connection.ReactiveServerCommands;
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 import org.springframework.data.redis.core.types.RedisClientInfo;
 import org.springframework.data.redis.util.ByteUtils;
 import org.springframework.util.Assert;
@@ -34,6 +35,7 @@ import org.springframework.util.Assert;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Dennis Neufeld
  */
 class LettuceReactiveServerCommands implements ReactiveServerCommands {
 
@@ -82,11 +84,21 @@ class LettuceReactiveServerCommands implements ReactiveServerCommands {
 		return connection.execute(RedisServerReactiveCommands::flushdb).next();
 	}
 
+	@Override
+	public Mono<String> flushDb(FlushOption option) {
+		return connection.execute(it -> it.flushdb(LettuceServerCommands.toFlushMode(option))).next();
+	}
+
 	@Override
 	public Mono<String> flushAll() {
 		return connection.execute(RedisServerReactiveCommands::flushall).next();
 	}
 
+	@Override
+	public Mono<String> flushAll(FlushOption option) {
+		return connection.execute(it -> it.flushall(LettuceServerCommands.toFlushMode(option))).next();
+	}
+
 	@Override
 	public Mono<Properties> info() {
 

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceServerCommands.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.connection.lettuce;
 
+import io.lettuce.core.FlushMode;
 import io.lettuce.core.LettuceFutures;
 import io.lettuce.core.RedisFuture;
 import io.lettuce.core.api.async.RedisKeyAsyncCommands;
@@ -34,6 +35,7 @@ import org.springframework.util.Assert;
 
 /**
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 2.0
  */
 class LettuceServerCommands implements RedisServerCommands {
@@ -74,11 +76,21 @@ class LettuceServerCommands implements RedisServerCommands {
 		connection.invokeStatus().just(RedisServerAsyncCommands::flushdb);
 	}
 
+	@Override
+	public void flushDb(FlushOption option) {
+		connection.invoke().just(it -> it.flushdb(toFlushMode(option)));
+	}
+
 	@Override
 	public void flushAll() {
 		connection.invokeStatus().just(RedisServerAsyncCommands::flushall);
 	}
 
+	@Override
+	public void flushAll(FlushOption option) {
+		connection.invokeStatus().just(it -> it.flushall(toFlushMode(option)));
+	}
+
 	@Override
 	public Properties info() {
 		return connection.invoke().from(RedisServerAsyncCommands::info).get(LettuceConverters.stringToProps());
@@ -221,6 +233,21 @@ class LettuceServerCommands implements RedisServerCommands {
 		return connection.getConnection();
 	}
 
+	static FlushMode toFlushMode(@Nullable FlushOption option) {
+
+		if (option == null) {
+			return FlushMode.SYNC;
+		}
+
+		switch (option) {
+			case ASYNC:
+				return FlushMode.ASYNC;
+			case SYNC:
+				return FlushMode.SYNC;
+		}
+		throw new UnsupportedOperationException("Flush option " + option + " is not implemented.");
+	}
+
 	static class CompletedRedisFuture<T> extends CompletableFuture<T> implements RedisFuture<T> {
 
 		public CompletedRedisFuture(T value) {

src/main/java/org/springframework/data/redis/core/ClusterOperations.java

@@ -22,6 +22,7 @@ import org.springframework.data.redis.connection.RedisClusterCommands;
 import org.springframework.data.redis.connection.RedisClusterNode;
 import org.springframework.data.redis.connection.RedisClusterNode.SlotRange;
 import org.springframework.data.redis.connection.RedisConnection;
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 
 /**
  * Redis operations for cluster specific operations. A {@link RedisClusterNode} can be obtained from
@@ -31,6 +32,7 @@ import org.springframework.data.redis.connection.RedisConnection;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Dennis Neufeld
  * @since 1.7
  */
 public interface ClusterOperations<K, V> {
@@ -117,6 +119,16 @@ public interface ClusterOperations<K, V> {
 	 */
 	void flushDb(RedisClusterNode node);
 
+	/**
+	 * Flush db on node using the specified flush option.
+	 *
+	 * @param node must not be {@literal null}.
+	 * @param option
+	 * @see RedisConnection#flushDb(FlushOption)
+	 * @since 2.6
+	 */
+	void flushDb(RedisClusterNode node, FlushOption option);
+
 	/**
 	 * @param node must not be {@literal null}.
 	 * @return

src/main/java/org/springframework/data/redis/core/DefaultClusterOperations.java

@@ -23,6 +23,7 @@ import org.springframework.data.redis.connection.RedisClusterCommands.AddSlots;
 import org.springframework.data.redis.connection.RedisClusterConnection;
 import org.springframework.data.redis.connection.RedisClusterNode;
 import org.springframework.data.redis.connection.RedisClusterNode.SlotRange;
+import org.springframework.data.redis.connection.RedisServerCommands.FlushOption;
 import org.springframework.data.redis.connection.RedisServerCommands.MigrateOption;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
@@ -31,6 +32,7 @@ import org.springframework.util.Assert;
  * Default {@link ClusterOperations} implementation.
  *
  * @author Christoph Strobl
+ * @author Dennis Neufeld
  * @since 1.7
  * @param <K>
  * @param <V>
@@ -149,6 +151,17 @@ class DefaultClusterOperations<K, V> extends AbstractOperations<K, V> implements
 		});
 	}
 
+	@Override
+	public void flushDb(RedisClusterNode node, FlushOption option) {
+
+		Assert.notNull(node, "ClusterNode must not be null.");
+
+		doInCluster((RedisClusterCallback<Void>) connection -> {
+			connection.flushDb(node, option);
+			return null;
+		});
+	}
+
 	@Override
 	public Collection<RedisClusterNode> getSlaves(final RedisClusterNode node) {
 

src/main/java/org/springframework/data/redis/core/ReactiveRedisTemplate.java

@@ -486,10 +486,6 @@ public class ReactiveRedisTemplate<K, V> implements ReactiveRedisOperations<K, V
 	// Methods dealing with Redis Lua scripts
 	// -------------------------------------------------------------------------
 
-	/*
-	 *(non-Javadoc)
-	 * @see org.springframework.data.redis.core.ReactiveRedisOperations#execute(org.springframework.data.redis.core.script.RedisScript, java.util.List, java.util.List)
-	 */
 	@Override
 	public <T> Flux<T> execute(RedisScript<T> script, List<K> keys, List<?> args) {
 		return reactiveScriptExecutor.execute(script, keys, args);

src/main/java/org/springframework/data/redis/support/collections/DefaultRedisSet.java

@@ -203,10 +203,6 @@ public class DefaultRedisSet<E> extends AbstractRedisCollection<E> implements Re
 		return DataType.SET;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.redis.support.collections.RedisSet#scan()
-	 */
 	@Override
 	public Cursor<E> scan() {
 		return scan(ScanOptions.NONE);