Client stats code sample

Author: mustafaiman

code_samples/client_statistics.js

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var Client = require('hazelcast-client').Client;
+var Config = require('hazelcast-client').Config;
+
+function createConfig() {
+    var cfg = new Config.ClientConfig();
+
+    var nearCacheConfig = new Config.NearCacheConfig();
+    cfg.nearCacheConfigs['nearCachedMap'] = nearCacheConfig;
+    cfg.properties['hazelcast.client.statistics.enabled'] = true;
+    cfg.properties['hazelcast.client.statistics.period.seconds'] = 2;
+    return cfg;
+}
+
+Client.newHazelcastClient(createConfig()).then(function (client) {
+    var ncMap;
+    return client.getMap('nearCachedMap').then(function (map) {
+        ncMap = map;
+        return ncMap.put('key1', 'value1');
+    }).then(function () {
+        return ncMap.get('key1');
+    }).then(function () {
+        return ncMap.get('key1');
+    }).then(function () {
+        return ncMap.get('key1');
+    }).then(function () {
+        // At this point, we have 1 near cache miss, 2 near cache hits as client near cache statistics.
+        // Sleep more than statistics collection time and keep client running. Then, you can see the statistics
+        // at the Management center.
+        setTimeout(function () {
+            client.shutdown();
+        }, 60000);
+    });
+});