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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..
What is Overloading explain with an example? Overloading is while the similar method or operator can be used on several different kinds of data. For example the + sign is used
how to write a program to assign value of variable age and print if person is major.
What do you think about an object's lock and which kinds of object's have locks?
What is a variable in Java program? It's a memory location. Memory location is given some name. Memory location is being assigned some value. Value may change o
Struts is a framework with set of co operating servlets, classes and JSP tags that create a reusable MVC 2 design. 1. Client (Browser) : A request from the cli
how to write method overriding and example programe
Explain BIOS in java language? BIOS basically stand for Basic input/output system it is also called as the system BIOS or ROM BIOS is a de facto standard describing a firmware
Question: a) Give a detailed description of your understanding concerning "Managing User Sessions and Open files". b) What is "Overriding Inheritance" and how can it be do
Are you real? I dont want to get help from a computer
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