Investigation and optimization of StringDeduplication with custom heuristic in different versions of the JVM

Noetzold, D.; Rossetto, A. G. de M.; Barbosa, J. L. V.; Leithardt, V. R. Q.

doi:10.1109/TLA.2025.10810397

Please use this identifier to cite or link to this item: http://hdl.handle.net/10071/32911

Author(s):	Noetzold, D. Rossetto, A. G. de M. Barbosa, J. L. V. Leithardt, V. R. Q.
Date:	2025
Title:	Investigation and optimization of StringDeduplication with custom heuristic in different versions of the JVM
Journal title:	IEEE Latin America Transactions
Volume:	23
Number:	1
Pages:	43 - 49
Reference:	Noetzold, D., Rossetto, A. G. de M., Barbosa, J. L. V., & Leithardt, V. R. Q. (2025). Investigation and optimization of StringDeduplication with custom heuristic in different versions of the JVM. IEEE Latin America Transactions, 23(1), 43-49. https://doi.org/10.1109/TLA.2025.10810397
ISSN:	1548-0992
DOI (Digital Object Identifier):	10.1109/TLA.2025.10810397
Keywords:	StringDeduplication JVM performance Memory optimization Heuristics Native code integration
Abstract:	Memory optimization in Java applications is essential for performance and scalability. This paper investigates the efficiency of the StringDeduplication parameter in JVM versions 11, 17, and 21, using a Web Crawler developed in Spring Boot. The results show that the efficiency of StringDeduplication decreased from 34.3% deduplication in version 11 to 3.4% in version 21, with an increase in deduplication time from 1,264 ms to 3,439 ms. To mitigate this problem, a custom solution in C was developed for JVM version 21, which increased deduplication to 31.1% and saved 110.2 MB of memory. The main scientific contribution of this work is the identification of the loss of efficiency of StringDeduplication in the latest JVM versions and the proposal of a custom solution that improves string deduplication, offering a viable alternative for developers and software engineers.
Peerreviewed:	yes
Access type:	Open Access
Appears in Collections:	ISTAR-RI - Artigos em revistas científicas internacionais com arbitragem científica

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