diff --git a/pom.xml b/pom.xml
index 25b49cc..c9a1419 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <groupId>com.arextest</groupId>
     <artifactId>arex-common</artifactId>
     <packaging>jar</packaging>
-    <version>0.1.30</version>
+    <version>0.2.0</version>
 
 
     <name>${project.groupId}:${project.artifactId}</name>
diff --git a/src/main/java/com/arextest/common/cache/AbstractRedisCacheProvider.java b/src/main/java/com/arextest/common/cache/AbstractRedisCacheProvider.java
index 8c502f1..790a8e1 100644
--- a/src/main/java/com/arextest/common/cache/AbstractRedisCacheProvider.java
+++ b/src/main/java/com/arextest/common/cache/AbstractRedisCacheProvider.java
@@ -91,6 +91,13 @@ public boolean expire(byte[] key, long seconds) {
     }
   }
 
+  @Override
+  public boolean exists(byte[] key) {
+    try (Jedis jedis = jedisPool.getResource()) {
+      return jedis.exists(key);
+    }
+  }
+
   @Override
   public LockWrapper getLock(String namespaceId) {
     return new RedissonLock(redissonClient.getLock(namespaceId));
diff --git a/src/main/java/com/arextest/common/cache/CacheProvider.java b/src/main/java/com/arextest/common/cache/CacheProvider.java
index d965a55..abc0981 100644
--- a/src/main/java/com/arextest/common/cache/CacheProvider.java
+++ b/src/main/java/com/arextest/common/cache/CacheProvider.java
@@ -89,6 +89,12 @@ public interface CacheProvider {
      */
     boolean expire(byte[] key, long seconds);
 
+    /**
+     * @param key
+     * @return
+     */
+    boolean exists(byte[] key);
+
     /**
      * Returns Lock instance by namespaceId.
      * @param namespaceId: name of object.
diff --git a/src/main/java/com/arextest/common/cache/redistemplate/AbstractRedisTemplateProvider.java b/src/main/java/com/arextest/common/cache/redistemplate/AbstractRedisTemplateProvider.java
index 2b84f01..42deee7 100644
--- a/src/main/java/com/arextest/common/cache/redistemplate/AbstractRedisTemplateProvider.java
+++ b/src/main/java/com/arextest/common/cache/redistemplate/AbstractRedisTemplateProvider.java
@@ -68,6 +68,11 @@ public boolean expire(byte[] key, long seconds) {
     return byteRedisTemplate.expire(key, seconds, TimeUnit.SECONDS);
   }
 
+  @Override
+  public boolean exists(byte[] key) {
+    return byteRedisTemplate.hasKey(key);
+  }
+
   @Override
   public LockWrapper getLock(String namespaceId) {
     return new RedissonLock(redissonClient.getLock(namespaceId));