rename exists to hasKey()

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/core/RedisOperations.java

@@ -50,7 +50,7 @@ public interface RedisOperations<K, V> {
 	 */
 	<T> T execute(RedisCallback<T> action);
 
-	Boolean exists(K key);
+	Boolean hasKey(K key);
 
 	void delete(Collection<K> key);
 

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/core/RedisTemplate.java

@@ -407,7 +407,7 @@ public class RedisTemplate<K, V> extends RedisAccessor implements RedisOperation
 	}
 
 	@Override
-	public Boolean exists(K key) {
+	public Boolean hasKey(K key) {
 		final byte[] rawKey = rawKey(key);
 
 		return execute(new RedisCallback<Boolean>() {