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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..
Write a ComputePart class and a ComputerKit class(and a cliet class to test them) You should include the following methods: a method returning "expensive" if the total of the price
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
Payroll Calculator for Both Hourly and Commission Employees In assignment 13, we will create a payroll calculator that calculates gross pay , taxes , and net pay fo
A specialized subclass of ActionForm that permits the creation of form beans with dynamic sets of properties (configured in configuration file), without requiring the developer to
Printing Calculator Canvas Printing Calculator In this assignment we will continue to work on our canvas printing web service. Specifically we will make use of Javascrip
student application
Service Oriented Architecture Service Oriented Architecture (SOA) is an evolution of the fundamentals governing a component based development. Component based development gives
Having one instance overall the application.eg.: Loggers
JavaScript supports the normal control structures: The conditionals if, if...else, & switch; The iterations for, while, do...while, break, & continue;
Translate Four Row Solitaires from Java Swing to Android. Project Description: There is a product known Four Row Solitaire listed in GitHub. I would like Swing GUI to be repl
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