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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 Event Handler works? An event handler is a command which is used to call a function when an event happens, such as the user clicking a button or mouse.
write a program to find the area under the curve y=f(x) between x=a and x=b,integrate y=f(x) between the limits of a and b. #include float start_point,
Assistance for JSON authentication problem RSS/AOL/Android The key problem we face is how to authenticate afterward the user logged in the webview as well as then parse the JSON
What are the advantages that Java's layout managers provide over traditional windowing systems ?
in java string is a
Write a bouncing ball video game. The game is similar to the one described and depicted in Figure of the text book. The balls bounces within the screen where the two horizontal wal
what java stream is used for designing railway reservation form?
Explain primitive data types in java? Java's primitive data types are extremely similar to those of C. They involve boolean, byte, short, long, int, float, double, and char. Th
What is the difference among using bind() and rebind() methods of Naming Class? Ans) Bind method (String name) binds the specified name to a remote object whereas rebind(String
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
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