Java applications passed the 1 Billion Row Challenge (1BRC) in 1.5 seconds. 1BRC creator Gunnar Morling detailed their optimizations at the InfoQ Dev Summit Munich 2024. General optimizations applicable to all Java applications cut the runtime from 290 seconds to 20 seconds. Getting to 1.5 seconds required niche optimizations that most Java applications should forego, except for possibly GraalVM.
By Karsten Silz
InfoQ – Java
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Java