Information Technology Reference
In-Depth Information
o
Recommendation
Using Virtual Private Cloud [Ref7] in AWS makes sure that all the
instances created within the VPC have the same subnet. JMeter load
generators and controllers are placed inside the VPC so that they can
generate the distributed load for web application on AWS cloud.
5
Conclusion
Hosting a web application on cloud does addresses the issues involved with
traditional data centre, such as hardware provisioning, software installations and
infrastructure maintenance. There were certain challenges that were faced while
setting up an environment which were solved either by using software or by
developing custom components. The hurdle around security with Elastic Load
Balancers could be tackled by implementing custom logic along with using software
load balancers.
Creating a network subnet which is an integral part for Apache JMeter
configuration can be handled by using AWS VPC. As far as the performance of an
application is concerned, web application deployed with two tier topology gives
optimum throughput on AWS cloud when compared with single tier and 3 tier setup.
Unless and until there is a specific requirement to go for three tier setup, two tier
setup is optimal solution. It's fault-tolerant, highly available, easy to configure and
maintain, and scalable. Scenario 3 is difficult to configure, due to additional overhead
of installing HAProxy and custom component for node discovery. It also lags in
performance due to network traffic and time taken by request to route thorough
HAProxy.
References and Further Reading
[1]
http://aws.amazon.com/elasticloadbalancing/
[2]
http://aws.amazon.com/ec2/
[3]
http://haproxy.1wt.eu/
[4]
http://aws.amazon.com/autoscaling/
[5]
http://jakarta.apache.org/jmeter/usermanual/remote-test.html
[6]
http://aws.amazon.com/ec2/instance-types/
[7]
http://aws.amazon.com/vpc/
[8]
http://aws.amazon.com/articles/1346
[9]
http://docs.amazonwebservices.com/AWSEC2/2007-08-29/
DeveloperGuide/distributed-firewall-concepts.html
