CacheDataModificationListener

Defines a callback method for notifying applications when the Cache is cleared or cache data is modified.

Constructor

# new CacheDataModificationListener(onCacheDataModified, onCacheCleared)

Parameters:

Name	Type	Description
`onCacheDataModified`	function	callback is called when the Cache data is modified
`onCacheCleared`	function	callback is called when the Cache is cleraed

Example

const ncache  = require('ncache-client');

function myDataSourceClear(cacheName) {
  //..
}

function myDataSourceModified(key, event) {
  //...
}

//Initialize the Cache Cluster 
let cache = await ncache.CacheManager.getCache("demoCache");
let messagingService = await cache.getMessagingService();

//Create cache data modification listener
let listerner = new ncache.CacheDataModificationListener(myDataSourceModified, myDataSourceClear);
await messagingService.addCacheNotificationListener(key, listerner, ncache.EventType.ItemAdded, ncache.EventDataFilter.DataWithMetadata);