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?

Board Colourling, write a program to find the minimum no of colors to fill ...

write a program to find the minimum no of colors to fill a board where some of the elements of different color are already placed.

Moving blobs, Don''t know how to write this...can anyone help me?

Don''t know how to write this...can anyone help me?

Arraya, what is arrays and how do they operate

what is arrays and how do they operate

SWING, Application using Swing API

Application using Swing API

How many kinds of errors can be found during a program, How many kinds of e...

How many kinds of errors can be found during a program development? List them. 1. Syntax errors 2. Semantic errors 3. Run-time errors

#, Consider the following code? What input is needed for x in order for the...

Consider the following code? What input is needed for x in order for the sum variable that is output at the end of the code to be 12 ? (In other words: what do I need to make X be

Decision tree algorithm, how to give dataset to a decision tree which is wr...

how to give dataset to a decision tree which is written by java using weka software?

Rmi client program, In a RMI Client Program, what are the excpetions which ...

In a RMI Client Program, what are the excpetions which may have to handled Ans) a. MalFormedURLException b. NotBoundException c. RemoteException

Describe j2ee?, J2EE (Java 2 Enterprise Edition) is an environment for depl...

J2EE (Java 2 Enterprise Edition) is an environment for deploying and developing enterprise applications on various operating system. The J2EE platform consists of J2EE components,

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