Define the considerations for servlet clustering? , JAVA Programming

Assignment Help:

 

The clustering regulates high scalability and availability. The basic considerations for servlet clustering are:

1. Objects opened in a session could be serializable to support in-memory replication of sessions. Also consider the problem of serializing very big objects. Test the performance to make sure it is running.

2. Design for idempotence. Failure of an impatient or a request users clicking again may result in duplicate requests being given. So the Servlets could be relay to tolerate duplicate requests.

3. Avoid using static and instance variables in write and read mode because different instances can exist on different JVMs or on different operating system. Any state could be held in an external instance such as a database.

4. Avoid sending values in a ServletContext. It is not serializable and also the different resources may exist in different JVMs.

5. Avoid  using  java.io.*  because  the  files  cannot  exist  on  all  backend  machines #question..

 


Related Discussions:- Define the considerations for servlet clustering?

What is a java package and how is it used, A Java package is a naming conte...

A Java package is a naming context for classes and interfaces. A package is used to make a separate name space for groups of classes and interfaces. Packages are also used to arran

Explain about class in java, In Java everything exists within a class. It d...

In Java everything exists within a class. It describes the behavior of the class and its characteristics. Java applications and applets are built in the class. Rules present for cl

What is rmi, RMI is a set of APIs that permits to build distributed applica...

RMI is a set of APIs that permits to build distributed applications. RMI uses interfaces to explain remote objects to turn local method invocations into remote method invocations.

How marketing strategies are changed along with the progress, How marketing...

How marketing strategies are changed along with the progress in computing? How latest marketing strategies are implemented? Marketing Strategy Changes along with the latest req

Project, Hey, i have a project on java can you help me

Hey, i have a project on java can you help me

Carbon Footprint Applications, 10.13 (CarbonFootprint Interface: Polymorphi...

10.13 (CarbonFootprint Interface: Polymorphism) Using interfaces, as you learned in this chapter, you can specify similar behaviors for possibly disparate classes. Governments and

How can we include images in a web page using html and java, How can we inc...

How can we include images in a web page using HTML and Java script?2011 Images in HTML It is quite straight forward to include gif and jpg images in an HTML webpage using the

How to execute class with a main() method in a package, Example:  You have...

Example:  You have a class named "Set" in a project folder "e:\myProject" and package named com.zxy.client, will you be able to compile and execute it as it is

Bidirectional currency conversion, Write a AXIS2 SOAP Java Web Service that...

Write a AXIS2 SOAP Java Web Service that performs a bidirectional currency conversion for the following currencies- GBP, EUR and USD (American Dollar). You are allowed to hardco

Code java and javascript in liferay, We need a serious programmer who will ...

We need a serious programmer who will code Java and Javascript in Liferay - open to bidding Project Description: Big Data project Prototype in Liferay. Big Data + User onl

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd