diff --git a/cache/src/tango_cache_client.cpp b/cache/src/tango_cache_client.cpp
index 7010e8b..032ce61 100644
--- a/cache/src/tango_cache_client.cpp
+++ b/cache/src/tango_cache_client.cpp
@@ -214,7 +214,7 @@ void tango_cache_ctx_destroy(struct tango_cache_ctx *ctx, bool callback)
 		case CACHE_REQUEST_PUT:
 			if(ctx->put.uploadID != NULL) free(ctx->put.uploadID);
 			if(ctx->put.combine_xml != NULL) free(ctx->put.combine_xml);
-			if(ctx->put.object_meta == NULL) cJSON_Delete(ctx->put.object_meta);
+			if(ctx->put.object_meta != NULL) cJSON_Delete(ctx->put.object_meta);
 			if(ctx->put.evbuf!=NULL)
 			{
 				ctx->instance->statistic.memory_used -= evbuffer_get_length(ctx->put.evbuf);
diff --git a/cache/test/cache_evbase_benchmark.cpp b/cache/test/cache_evbase_benchmark.cpp
index d245244..e3744f6 100644
--- a/cache/test/cache_evbase_benchmark.cpp
+++ b/cache/test/cache_evbase_benchmark.cpp
@@ -320,7 +320,11 @@ static void* thread_transfer_cmd(void *arg)
 				{
 					object_store_update_frag_data(ctx, PUT_MEM_COPY, filecont.buf+(filecont.len-remain_len), remain_len);
 				}
-				object_store_update_end(ctx, pdata->filename, 256);
+				if(object_store_update_end(ctx, pdata->filename, 256))
+				{
+					future_destroy(pdata->future);
+					free(pdata);
+				}
 				break;
 
 			case METHOD_HEAD:
@@ -343,7 +347,11 @@ static void* thread_transfer_cmd(void *arg)
 				
 				pdata = (struct future_pdata *)malloc(sizeof(struct future_pdata));
 				pdata->future = future_create(put_future_success, put_future_failed, pdata);
-				object_store_upload_once_data(instance_asyn, pdata->future, PUT_MEM_FREE, filecont.buf, filecont.len, &putmeta, pdata->filename, 256);
+				if(object_store_upload_once_data(instance_asyn, pdata->future, PUT_MEM_COPY, filecont.buf, filecont.len, &putmeta, pdata->filename, 256))
+				{
+					future_destroy(pdata->future);
+					free(pdata);
+				}
 				break;
 			case METHOD_PUTONCEEV:
 				remain_len = filecont.len;
@@ -365,7 +373,11 @@ static void* thread_transfer_cmd(void *arg)
 				{
 					evbuffer_add(evbuf, filecont.buf+(filecont.len-remain_len), remain_len);
 				}
-				object_store_upload_once_evbuf(instance_asyn, pdata->future, evbuf, &putmeta, pdata->filename, 256);
+				if(object_store_upload_once_evbuf(instance_asyn, pdata->future, evbuf, &putmeta, pdata->filename, 256))
+				{
+					future_destroy(pdata->future);
+					free(pdata);
+				}
 				break;
 			default:break;
 		}
@@ -389,7 +401,7 @@ int main(int argc, char **argv)
 
 	if(argc != 6)
 	{
-		printf("USAGE: %s <method,1-GET,2-PUT> <file> <threads> <total_num> <limit_session_num>\n", argv[0]);
+		printf("USAGE: %s <method,1-GET,2-PUT,5-PUTONCE> <file> <threads> <total_num> <limit_session_num>\n", argv[0]);
 		return -1;
 	}
 
diff --git a/cache/test/tango_cache_test.cpp b/cache/test/tango_cache_test.cpp
index 00ba43c..fb7f618 100644
--- a/cache/test/tango_cache_test.cpp
+++ b/cache/test/tango_cache_test.cpp
@@ -262,7 +262,10 @@ static void dummy_accept_callback(evutil_socket_t fd, short events, void *arg)
 				pdata = (struct future_pdata *)malloc(sizeof(struct future_pdata));
 				pdata->future = future_create(put_future_success, put_future_failed, pdata);
 				
-				tango_cache_upload_once_data(tango_instance, pdata->future, PUT_MEM_FREE, p, filelen, &putmeta, pdata->filename, 256);
+				if(tango_cache_upload_once_data(tango_instance, pdata->future, PUT_MEM_FREE, p, filelen, &putmeta, pdata->filename, 256))
+				{
+					put_future_failed(FUTURE_ERROR_CANCEL, "", pdata);
+				}
 			}
 			else if(!strcasecmp(p, "PUTONCEEV"))
 			{
@@ -283,7 +286,10 @@ static void dummy_accept_callback(evutil_socket_t fd, short events, void *arg)
 					evbuffer_add(evbuf, buffer, readlen);
 				}
 				fclose(fp);
-				tango_cache_upload_once_evbuf(tango_instance, pdata->future, EVBUFFER_MOVE, evbuf, &putmeta, pdata->filename, 256);
+				if(tango_cache_upload_once_evbuf(tango_instance, pdata->future, EVBUFFER_MOVE, evbuf, &putmeta, pdata->filename, 256))
+				{
+					put_future_failed(FUTURE_ERROR_CANCEL, "", pdata);
+				}
 			}
 			else if(!strcasecmp(p, "DEL"))
 			{
@@ -323,7 +329,10 @@ static void dummy_accept_callback(evutil_socket_t fd, short events, void *arg)
 					tango_cache_update_frag_data(ctx, buffer, n);
 				}
 				fclose(fp);
-				tango_cache_update_end(ctx, pdata->filename, 256);
+				if(tango_cache_update_end(ctx, pdata->filename, 256))
+				{
+					put_future_failed(FUTURE_ERROR_CANCEL, "", pdata);
+				}
 			}
 		}
 		else