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?

Program on remote procedure call on a cs architecture, This project simulat...

This project simulates a remote procedure call on a client-server architecture. You will create both the client and the server. The server will maintain a linked list. It must N

Complete back end and front end development, Complete Back end and Front En...

Complete Back end and Front End Development Project Description: This work is a part of ongoing project. The need is to prepare and integrate the web part of this project.

Illustrate dynamic vs. static class loading?, 1. "Classes are statically lo...

1. "Classes are statically loaded with Java's "new" operator." This would imply that static methods could be executed without the class being loaded. 2. "Unlike the static loa

Explain why java does not support multiple inheritance, Question: (a) ...

Question: (a) Differentiate between the following terms using suitable examples of your own:- (i) inheritance v/s composition (ii) subclass v/s superclass (iii) softwa

Java program need to compile, Java program need to compile Project Descr...

Java program need to compile Project Description: i have one program required to compile to run it . Skills required: Java

Servlet, how to request one servlet to another by passing value

how to request one servlet to another by passing value

Give the example of mixing data type in java, Give the example of mixing da...

Give the example of mixing data type in java? Mixing Data Types Order can form a difference while data types are mixed. For example, 1 / 2 * 3.5 = 0.0 3.5 * 1 / 2 = 1.75 3.5 /

Project, Prog. Concepts - Project The objective is to implement a menu - ba...

Prog. Concepts - Project The objective is to implement a menu - based system for Bank Accounts in order to simulate a very simple banking system. Many structures have to be declare

What is an xml namespace?, Question 1 What is Response Redirection? Explai...

Question 1 What is Response Redirection? Explain in brief Question 2 What is JDBC? Explain Question 3 Write a short note on Expressions Question 4 What is an XML na

Need jvc everio stream converter, Need JVC Everio stream converter Proje...

Need JVC Everio stream converter Project Description: JVC Everio is a brand of cameras capable of real time streaming/ encodinig. To get the video from a PC or a mobile de

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