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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..
Synchronous messaging involves a client that waits for the server to respond to a message. So if one end is down the whole communication will fail.
Task 1 Create a new project in Eclipse called Assignment 1. Within this project create a package called task01. 1/ Download the class Date (you must use this class - no
public class Foothill { public static void main(String[] args) { Client person_1 = new Client("Bruce Ruprecht", 16000, 10); Writer writer_1 = new Writer("Adam Buf
Explain Testing Objects for Equality in java? , = can only be used with numbers and characters. They cannot be used with Strings, booleans, arrays or other compound types sin
The Applet's life cycle functions are as follows: public void init() : Initialization function called only once by the browser. public void start() : Method called after
need java help[
write a program in java which enters name,roll #,and shows the sum of students english and maths marks?
Explain different way of using thread? The thread could be executed by using runnable interface or by inheriting from the Thread class. The former is more advantageous, 'cau
how to read data in a link list?
Benefits of AOP (Aspect Oriented programming) OOP can give the system level code like transaction management, logging, security etc to scatter throughout the business logic. A
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