Compressing serialized java objects: a comparative analysis of six compression methods

Authors:
Ghassan Samara;Ahmad El-Halabi;Jalal Kawash
Affiliations:
Department of Computer Science, American University of Sharjah, Sharjah, United Arab Emirates;Department of Computer Science, American University of Sharjah, Sharjah, United Arab Emirates;Department of Computer Science, American University of Sharjah, Sharjah, United Arab Emirates
Venue:
ACST'07 Proceedings of the third conference on IASTED International Conference: Advances in Computer Science and Technology
Year:
2007

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Abstract

Java objects are serialized into a linear stream of bytes so that they can be stored in persistent storage or passed by value as parameters to remote method invocations. Storing or transmitting a compressed version of the object is desirable for better storage or transmission efficiency. Lossless compression methods have been in use for long and their relative merits have been considered in many studies. In this paper, we study the relative merits of six well known compression methods in the context of serialized Java objects. To our knowledge, this is the only such study that considers all six compression methods in one study. A conclusion of our study is that LZMA yields the best compromise between compression ratio and compression speed for Java objects. BZip2 yields similar results for objects that do not contain images, but requires longer runtime with such objects.