cache: added cache executor service

application/src/main/resources/thingsboard.yml

@@ -332,6 +332,7 @@ actors:
 cache:
   # caffeine or redis
   type: "${CACHE_TYPE:caffeine}"
+  maximumPoolSize: "${CACHE_MAXIMUM_POOL_SIZE:16}" # max pool size to process futures that calls the external cache
   attributes:
     # make sure that if cache.type is 'redis' and cache.attributes.enabled is 'true' that you change 'maxmemory-policy' Redis config property to 'allkeys-lru', 'allkeys-lfu' or 'allkeys-random'
     enabled: "${CACHE_ATTRIBUTES_ENABLED:true}"

dao/src/main/java/org/thingsboard/server/dao/cache/CacheExecutorService.java

@@ -0,0 +1,48 @@
+/**
+ * ThingsBoard, Inc. ("COMPANY") CONFIDENTIAL
+ *
+ * Copyright © 2016-2021 ThingsBoard, Inc. All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of ThingsBoard, Inc. and its suppliers,
+ * if any.  The intellectual and technical concepts contained
+ * herein are proprietary to ThingsBoard, Inc.
+ * and its suppliers and may be covered by U.S. and Foreign Patents,
+ * patents in process, and are protected by trade secret or copyright law.
+ *
+ * Dissemination of this information or reproduction of this material is strictly forbidden
+ * unless prior written permission is obtained from COMPANY.
+ *
+ * Access to the source code contained herein is hereby forbidden to anyone except current COMPANY employees,
+ * managers or contractors who have executed Confidentiality and Non-disclosure agreements
+ * explicitly covering such access.
+ *
+ * The copyright notice above does not evidence any actual or intended publication
+ * or disclosure  of  this source code, which includes
+ * information that is confidential and/or proprietary, and is a trade secret, of  COMPANY.
+ * ANY REPRODUCTION, MODIFICATION, DISTRIBUTION, PUBLIC  PERFORMANCE,
+ * OR PUBLIC DISPLAY OF OR THROUGH USE  OF THIS  SOURCE CODE  WITHOUT
+ * THE EXPRESS WRITTEN CONSENT OF COMPANY IS STRICTLY PROHIBITED,
+ * AND IN VIOLATION OF APPLICABLE LAWS AND INTERNATIONAL TREATIES.
+ * THE RECEIPT OR POSSESSION OF THIS SOURCE CODE AND/OR RELATED INFORMATION
+ * DOES NOT CONVEY OR IMPLY ANY RIGHTS TO REPRODUCE, DISCLOSE OR DISTRIBUTE ITS CONTENTS,
+ * OR TO MANUFACTURE, USE, OR SELL ANYTHING THAT IT  MAY DESCRIBE, IN WHOLE OR IN PART.
+ */
+package org.thingsboard.server.dao.cache;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.thingsboard.common.util.AbstractListeningExecutor;
+
+@Component
+public class CacheExecutorService extends AbstractListeningExecutor {
+
+    @Value("${cache.maximumPoolSize}")
+    private int poolSize;
+
+    @Override
+    protected int getThreadPollSize() {
+        return poolSize;
+    }
+
+}