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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..
Staging areas that have messages those have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages don't have to be delivered in the or
I do not understand how to do this? can someone help me?
Explain the term Naming Packages in details? As you saw previously name space conflicts arise if two pieces of code declare the similar name. Java remains track of what belongs
how i made a calculator in java plz tell help me
Farm Production System Project Description: I require software that will allow me to input/record the daily production of our farm and allow me to view the data back in the o
what is meant by thread
Diffentiate Local and Global Variables? Local or function level variable effective just in the function in that they are declared although global variables visible everywhere o
What are Access Specifiers available in Java? Java has four access specifiers, which are enlisted below: Public: public methods, classes and fields can be accessed by ever
1. Which of the following are not valid Java identifiers, and why? (a) wolVes (b) United(there is only one) (c) 87 (d) 5 3 (e) Real ale (f) isFound?by 2. A class Television
Java Program Development and Execution Steps Java program normally go through five phases. These are 1. Edit, 2. Compile, 3. Load, 4. Verify and 5. Execute Co
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