Set Alarm

In this example, alarm functionality is demonstrated.

• Trigger alarm if heap used by Node.js exceeds 5 MB

File : setAlarm.js

const net = require('net');
const debug = require('pretty-debug');

debug.info('Example : Set Alarm');

debug.scheduleHealthCheck(function(){
	debug.memoryWatermark();
	debug.sysMemoryMonitor();
	debug.nodeMemoryMonitor({
		heapTotal: { upperLimit : 5 }
	}, function(){
		debug.critical('Memory Usage Alarm : Total heap usage is above 5 MB');
		// Do other things like sending email!
	});
}, 1);

Run Example

To run the above example simply run the command below

$ node setAlarm.js

Output