Wednesday, September 29, 2010

Serialization Performance


Serialization is the process of converting objects into sequence of
bits (that includes the object's data as well as information about the
object's type and the types of data stored in the object.) that can be
transferred across the network connection. The process of
serialization is also called marshaling and opposite to this (recreate
the original objects) is called de-serialization or un-marshalling.
Java provides the automatic serialization of objects. For
serialization, classes of objects must implements the interface or "import; "
Note: Only those objects of classes that implement interface can be serialized and de-serialized.

Improving the Serialization Performance

• For example, you can reduce the size of the serialized data stream
by instructing the run-time serializes to ignore specific fields
within your class. Another way to improve performance is to implement
the ISerializable interface to gain explicit control over the
serialization (and deserialization) process.
• Fields that are declared final or transient are not exchanged
during RPCs.
• You can use attributes to prevent specific fields in your class from
being serialized. This reduces the size of the output stream and
reduces serialization processing overhead. This technique is also
useful to prevent security-sensitive data from being serialized.
• RPCs give you the opportunity to move all of your UI logic to the
client, resulting in greatly improved performance, reduced bandwidth,
reduced web server load, and a pleasantly fluid user experience.

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