1. Market leader in AMQP - RabbitMQ, with its hundreds of production deployments and its increasing penetration into the Linux market  along with widespread adoption in the cloud (Amazon,Engineyard et al) has clearly emerged as a market leader in AMQP. RabbitMQ with its .Net edition is the most deployed AMQP broker in Windows.
   
2. Clustering and High Availability - RabbitMQ supports both active\passive and active\active (from version 2.6.0) modes of operation making it more reliable and fault tolerant as an enterprise messaging system. Clustering RabbitMQ is very simple which doesn't warrant any load balancer or any software component whereas one of the nodes manages the master queue and distribute the messages across the slaves.
   
3. Lower cost of management and maintenance - With just 12k lines of code and the core engine being written in Erlang/OTP which is known for its use in highly scalable telcos, RabbitMQ is capable of lowering the cost of management and maintenance drastically.
   
4. Support across multiple platforms - RabbitMQ supports multiple platforms .This helps a lot of developers as most often their development and deployment are  in different platforms.They also support wide range of protocols like  HTTP,STOMP,SMTP and more.

Some good news from us!!.  As a part of  VMware vFabric family, RabbitMQ will now be supported by ManageEngine Applications Manager in a forthcoming release. The coalesce of RabbitMQ monitoring with VMware vFabric tc server monitoring will offer a deeper insight into performance of the applications.  And for those who are curious,  here is a  sneak peek into what's cooking in Applications Manager pertaining to RabbitMQ monitoring .

Queued Messages And Message Rates

 Nodes

 If the socket descriptors utilization is high , it may lead to performance bottleneck and it is also possible that some of the subsequent connections may get timed out.

Message rates of Queues

 The performance of the messaging queues can be improved with the aid of the historical reports generated .

Channels

Exchanges

Connections

If there is a network congestion,  it is possible to zero-in on the connection which is choking the bandwidth . 

We believe the support for RabbitMQ along with VMware vFabric tc Server will further augment our monitoring capabilities for VMware virtualization infrastructure. If you are already using RabbitMQ and have any suggestions or feedback for this  feature, please drop in a mail to appmanager-support@manageengine.com

1. package test;
2. 
   
3. public class StrVsBuffVsBuild {
4. 
   
5.         public static void main(String[] args) {
6. 
   
7.                 int count=200000;
8.                 System.out.println("Number of Strings concat Operation is \'"+count+"\'");
9.                 long st = System.currentTimeMillis();
10.                 String str = "";
11.                 for (int i = 0; i < count; i++) {
12.                         str += "MyString";
13.                 }
14.                 System.out.println("Time taken for String concat (+) Operation is \'"+(System.currentTimeMillis()-st)+"\' Millis");
15.                 st = System.currentTimeMillis();
16.                 StringBuffer sb = new StringBuffer();
17.                 for (int i = 0; i < count; i++) {
18.                         sb.append("MyString");
19.                 }
20.                 System.out.println("Time taken for StringBuffer.append() Operation is \'"+(System.currentTimeMillis()-st)+"\' Millis");
21.                 st = System.currentTimeMillis();
22.                 StringBuilder sbr = new StringBuilder();
23.                 for (int i = 0; i < count; i++) {
24.                         sbr.append("MyString");
25.                 }
26.                 System.out.println("Time taken for StringBuilder.append() Operation is \'"+(System.currentTimeMillis()-st)+"\' Millis");
27.         }
28. }

Number of Strings concat Operation is '200000'
Time taken for String concat (+) Operation is '373933' Millis
Time taken for StringBuffer.append() Operation is '19' Millis

Time taken for StringBuilder.append() Operation is '5' Millis

Here, we take you through the gist of new features and enhancements which has gone into ManageEngine Applications Manager, release 10.1:

Support for monitoring VMware vFabric tc Server

VFabric is the cloud application platform from VMware and vFabric tc Server is the Tomcat-compatible enterprise application server suited for virtual environments. We had earlier announced at VMworld 2011 in Las Vegas that we will be supporting VMware vFabric tc Server.

We now support monitoring of the VMware vFabric tc Server, providing visibility into its critical components and the Spring-based cloud applications deployed in them.   It will help businesses to manage applications in the cloud, take proactive actions on any performance problems, thereby ensuring a high uptime and peak performance of the server.

Support for monitoring SSL certificate

Applications Manager now automates the job of managing SSL certificate of your website. With our SSL Certificate Monitor, you get notified of the expiry date, well in advance, according to the threshold defined for the same.

Additional enhancements in this release include, support for Gmail in Mail Server Configuration, support for monitoring SOAP operations with headers and more.

Here is a screenshot tour of our latest features. You can also check out the new version, by upgrading to the latest version of Applications Manager.

Try it out and post your comments on the new version.